PocketCAS lite for Mathematics

- Updated the CAS kernel to the latest version.
- This version should finally resolve all remaining crashes on older operating system versions.

- Updated the CAS kernel to the latest version.
- Version 2023.1.3 should hopefully fix a crash at launch on iOS 12.
- Version 2023.1.4 should hopefully fix another crash when loading documents.

- Updated the CAS kernel to the latest version.
- This version should hopefully also fix a crash at launch on iOS 12.

Updated the CAS kernel to the latest version.
Reverted the crash fix from version 2023.1.1, as it caused a lot of other problems. Sorry about that!

- Updated the CAS kernel to the latest version.
- Added support for 120 Hz animations on ProMotion-enabled iPhones.
- Fixed a few crashes.

- Improved support for e.g. the factorization of very large integers.
- Updated the CAS kernel to the latest version.

- Full support for the new operating system versions.
- Updated the CAS kernel to the latest version.
- Fixed a few minor issues.
- Improved mouse pointer support.
- Fixed an issue with the matrix editor losing focus.

- Fixed an issue with loading documents stored in iCloud Drive, but not inside the "PocketCAS" folder in iCloud Drive.
- Various stability fixes, especially with regards to the toolbar as well as plotting.

Bugfix: Fixed an issue with printing/exporting documents that contain 2D graphs.
Bugfix: Fixed an issue with exporting full-screen 3D graphs.
Bugfix: Fixed an issue with misaligned value tables.
Bugfix: Added a workaround that might fix issues with saving documents to iCloud.

New Feature: Added support for dark mode on upcoming versions of iOS.
New Feature (BETA): Added extremely rudimentary support for showing calculation steps for a few functions. Enable "Calculation Steps" in the document settings, then e.g. calculate "diff(sin(x)^3)" to see an example. Note that calculation steps will need to be enabled independently for each document, and the usefulness of the steps can vary greatly. We can not guarantee that the quality of these steps will ever increase, so this feature might remain "Beta" forever.
New Feature: You can now set a custom legend label for a graph, e.g. "Parabola" instead of "x^2".
Improvement: Increased the size of the matrix editor on iPad.
Improvement: Updated to the latest version of the CAS kernel.
Improvement: Internal rearchitecting and modernizing of the app.
Note: PocketCAS now requires iOS 11 or newer.

New Feature: Added support for new iPad screen resolutions.
Improvement: Reverted the "blue" graph color on Mac back to its previous value.

Changes in PocketCAS 3.11:

New Feature (Mac): Added support for Dark Mode on macOS Mojave!
New Feature: You can now use the function domain() to find out the definition domain of a function. Example: domain(log(x-0.5)+asin(x))
Improvement: Improved support for iOS 12.
Improvement: Added support for surfacing PocketCAS documents as Siri suggestions.
Improvement: Added support for new iPhone screen sizes (e.g. for iPhone XS Max).
Improvement: Updated to the latest computation kernel (which includes the domain() function mentioned above).
Improvement: PocketCAS can now automatically detect issues with iCloud document storage and suggests disabling it.
Improvement: Added an _underscore_ option to the keyboard on iOS (press and hold the '.' key to access it).
Improvement (Mac): Disabled smart quotes in the entry editor.
Improvement (Mac): Improved the visuals of 3D line drawing.
Bugfix: Fixed a few minor calculation errors and crashes.
Bugfix (Mac): Better display when scrollbars set to always show.

New Feature (Mac): Added support for Dark Mode on macOS Mojave!
New Feature: You can now use the function domain() to find out the definition domain of a function. Example: domain(log(x-0.5)+asin(x))
Improvement: Improved support for iOS 12.
Improvement: Added support for surfacing PocketCAS documents as Siri suggestions.
Improvement: Added support for new iPhone screen sizes (e.g. for iPhone XS Max).
Improvement: Updated to the latest computation kernel (which includes the domain() function mentioned above).
Improvement: PocketCAS can now automatically detect issues with iCloud document storage and suggests disabling it.
Improvement: Added an _underscore_ option to the keyboard on iOS (press and hold the '.' key to access it).
Improvement (Mac): Disabled smart quotes in the entry editor.
Improvement (Mac): Improved the visuals of 3D line drawing.
Bugfix: Fixed a few minor calculation errors and crashes.
Bugfix (Mac): Better display when scrollbars set to always show.
Bugfix: Fixed a crash in PocketCAS 3.11 under with old operation system versions.

New Feature (Mac): Added support for Dark Mode on macOS Mojave!
New Feature: You can now use the function domain() to find out the definition domain of a function. Example: domain(log(x-0.5)+asin(x))
Improvement: Improved support for iOS 12.
Improvement: Added support for surfacing PocketCAS documents as Siri suggestions.
Improvement: Added support for new iPhone screen sizes (e.g. for iPhone XS Max).
Improvement: Updated to the latest computation kernel (which includes the domain() function mentioned above).
Improvement: PocketCAS can now automatically detect issues with iCloud document storage and suggests disabling it.
Improvement: Added an _underscore_ option to the keyboard on iOS (press and hold the '.' key to access it).
Improvement (Mac): Disabled smart quotes in the entry editor.
Improvement (Mac): Improved the visuals of 3D line drawing.
Bugfix: Fixed a few minor calculation errors and crashes.
Bugfix (Mac): Better display when scrollbars set to always show.

Bugfix: Fixed crashes when entering functions under iOS 11.2 beta.
Bugfix: Fixed a few calculation errors.
Improvement: Made 3D line graphs a bit thicker, for better visibility.
Improvement (Mac): Made the width of the "expanded" graph popover depend on the current window's width.

For the improvements in PocketCAS 3.10, please see https://pocketcas.com/changes.php.

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

The bad news: The previous version of PocketCAS had a few crashing bugs.
The good news: Our new crash-reporting system helped us find them more easily.
The better news: This update fixes them!

New Feature (iOS 11): Drag-and-drop support! You can now:
- Use drag-and-drop on the sides of entries to re-order them.
- Drop text onto PocketCAS' entry list to create a new entry with that text.
- Drag-and-drop a formula inside PocketCAS to create a new entry with the formula's text.
- Drop an image onto a 'Calculation' entry to attach it to the calculation as an image annotation.
- Drag plots outside PocketCAS to export them in transparent PNG or PDF format. (The exported type can be configured in the application settings, but also depends on the receiving application.)
- Drag formulas outside PocketCAS to export them in transparent PNG, PDF, or text format. (The exported type can be configured in the application settings, but also depends on the receiving application.)

New Feature (iOS 11): File management! PocketCAS uses iOS 11's new document picker. This lets you create subfolders, save documents anywhere you like, tag them, browse them in the Files app, and more. The file browser will even show thumbnail previews of the first entry for documents that have been edited with PocketCAS 3.10 before.
New Feature (iPhone X): PocketCAS will fully support the iPhone X's display from day one.
Improvement: PocketCAS should now remember your last-opened document more reliably.
Improvement: Increased the default accuracy for 2D graphs.
Improvement: Slightly improved the quality of 3D graphs, especially when exporting them on macOS.
Improvement: PocketCAS will now display variables in the entry editor in italics as soon as you declare them with ':=', even before you actually execute the calculation that sets them.
Improvement (Mac): Added a hotkey to search the function list in the entry editor.
Bugfix: Fixed a few bugs in the computation kernel (CAS).
Bugfix (Mac): Fixed crashes under OS X Mavericks.

You might be wondering why there's no entry "Added support for the 10.5-inch iPad Pro's display" in here. Well, that display was supported by PocketCAS right out of the box!

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

Remember that issue we mentioned in yesterday's Release notes for PocketCAS 3.10 where tapping a keyboard button would open a new, blank editor? Guess what — we were able to reproduce and finally fix it :-)

So here comes PocketCAS 3.10.1 with a fix for that and the following improvements from PocketCAS 3.10:

New Feature (iOS 11): Drag-and-drop support! You can now:
- Use drag-and-drop on the sides of entries to re-order them.
- Drop text onto PocketCAS' entry list to create a new entry with that text.
- Drag-and-drop a formula inside PocketCAS to create a new entry with the formula's text.
- Drop an image onto a 'Calculation' entry to attach it to the calculation as an image annotation.
- Drag plots outside PocketCAS to export them in transparent PNG or PDF format. (The exported type can be configured in the application settings, but also depends on the receiving application.)
- Drag formulas outside PocketCAS to export them in transparent PNG, PDF, or text format. (The exported type can be configured in the application settings, but also depends on the receiving application.)

New Feature (iOS 11): File management! PocketCAS uses iOS 11's new document picker. This lets you create subfolders, save documents anywhere you like, tag them, browse them in the Files app, and more. The file browser will even show thumbnail previews of the first entry for documents that have been edited with PocketCAS 3.10 before.
New Feature (iPhone X): PocketCAS will fully support the iPhone X's display from day one.
Improvement: PocketCAS should now remember your last-opened document more reliably.
Improvement: Increased the default accuracy for 2D graphs.
Improvement: Slightly improved the quality of 3D graphs, especially when exporting them on macOS.
Improvement: PocketCAS will now display variables in the entry editor in italics as soon as you declare them with ':=', even before you actually execute the calculation that sets them.
Improvement (Mac): Added a hotkey to search the function list in the entry editor.
Bugfix: Fixed a few bugs in the computation kernel (CAS).
Bugfix (Mac): Fixed crashes under OS X Mavericks.

You might be wondering why there's no entry "Added support for the 10.5-inch iPad Pro's display" in here. Well, that display was supported by PocketCAS right out of the box!

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

PLEASE NOTE: We had occasional reports where tapping buttons on PocketCAS' built-in math keyboards would open a new blank entry editor under iOS 11. For us, these issues disappeared completely once we rebooted our devices. Unfortunately, this also meant that we could no longer reproduce (nor fix) these issues. In case they still occur for you even after a reboot, please let us know so we can investigate them together!

New Feature (iOS 11): Drag-and-drop support! You can now:
- Use drag-and-drop on the sides of entries to re-order them.
- Drop text onto PocketCAS' entry list to create a new entry with that text.
- Drag-and-drop a formula inside PocketCAS to create a new entry with the formula's text.
- Drop an image onto a 'Calculation' entry to attach it to the calculation as an image annotation.
- Drag plots outside PocketCAS to export them in transparent PNG or PDF format. (The exported type can be configured in the application settings, but also depends on the receiving application.)
- Drag formulas outside PocketCAS to export them in transparent PNG, PDF, or text format. (The exported type can be configured in the application settings, but also depends on the receiving application.)

New Feature (iOS 11): File management! PocketCAS uses iOS 11's new document picker. This lets you create subfolders, save documents anywhere you like, tag them, browse them in the Files app, and more. The file browser will even show thumbnail previews of the first entry for documents that have been edited with PocketCAS 3.10 before.
New Feature (iPhone X): PocketCAS will fully support the iPhone X's display from day one.
Improvement: PocketCAS should now remember your last-opened document more reliably.
Improvement: Increased the default accuracy for 2D graphs.
Improvement: Slightly improved the quality of 3D graphs, especially when exporting them on macOS.
Improvement: PocketCAS will now display variables in the entry editor in italics as soon as you declare them with ':=', even before you actually execute the calculation that sets them.
Improvement (Mac): Added a hotkey to search the function list in the entry editor.
Bugfix: Fixed a few bugs in the computation kernel (CAS).
Bugfix (Mac): Fixed crashes under OS X Mavericks.

You might be wondering why there's no entry "Added support for the 10.5-inch iPad Pro's display" in here. Well, that display was supported by PocketCAS right out of the box!

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

Version 3.9.1 fixes a rare crash (mostly happening on macOS) when manipulating plots introduced in version 3.9.

Version 3.9:

This update switches PocketCAS to a different C++ library. This should have very little impact on you, except for improved performance in some cases :-)
However, in case you notice anything weird, please let us know via the app's support form.

In addition, this version contains:

Improvement: Added a "Safe Mode" that doesn't load results and variables in documents, to avoid crashes. On iOS, this mode automatically activates when the app crashes during launch.
Bugfix: Fixed a crash on iPhone when trying to open the graph settings for a second time.

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

This update switches PocketCAS to a different C++ library. This should have very little impact on you, except for improved performance in some cases :-)
However, in case you notice anything weird, please let us know via the app's support form.

In addition, this version contains:

Improvement: Added a "Safe Mode" that doesn't load results and variables in documents, to avoid crashes. On iOS, this mode automatically activates when the app crashes during launch.
Bugfix: Fixed a crash on iPhone when trying to open the graph settings for a second time.

In case you left a review before, please consider updating (or reposting) it according to how the new version works for you. App Store reviews are very important to us.

This update fixes a crash under iOS 8 and earlier.
In case you left a review, please consider updating it according to how the new version works for you. App Store reviews are very important to use.

Changes in version 3.8.3:
New feature: PocketCAS for Mac now supports the MacBook Pro's new touch bar.
Bugfix: Fixed some keyboard problems on iOS 10 when rotating the device.

PocketCAS is the most advanced mathematics application for iPhone and iPad. It can help you with any kind of math problem, from elementary school all the way up to calculus, algebra and statistics. It can replace your old graphing calculator, help you with your homework, and assist you in any kind of calculation for university or work.

This app is an indispensable tool for every student, teacher and engineer. It makes college-level calculus and algebra easy and can help you in a wide range of cases. It provides features comparable with a TI-84 calculator and combines them with a modern, intuitive interface and incredible graphics capabilities.

MATHEMATICAL CAPABILITIES
- 2D Plots: Quickly create 2D cartesian, implicit, polar or parametric plots.
- 3D Plots: PocketCAS draws stunning 3D plots! Supports x-y cartesian plots, parametric area plots and parametric line plots.
- Animated plots: Use the variable 'anim' to animate any plot over time.
- Calculus: Calculates derivatives.
- Linear Algebra: Invert and multiply matrices or calculate determinants and much more!
- Algebra: Perform integer factorization.
- Scripting: PocketCAS' C-style scripting language allows you to define custom functions, use conditional expressions, loops and also supports recursion.
- Physical Units: Constants and units are provided out of the box. Simply enter physical formulas with the corresponding units and convert results to the units you prefer.

ADDITIONAL FUNCTIONALITY
- iCloud support: Sync documents between your Mac, iPhone and iPad!
- Export: Print or export plots, entries or the whole document as PDF!
- Mathematical keyboard: PocketCAS' mathematical keyboard is unmatched on the App Store.
- Help: All functions are explained in the built-in reference. If you're stuck, there's plenty of tutorials as well as a manual (https://pocketcas.com/manual) to get you going. And you can always contact our support (https://pocketcas.com/support) for help!
- Offline computation: PocketCAS doesn't need an internet connection to calculate results.

LIMITATIONS OF THE LITE VERSION
PocketCAS lite is a price-reduced version of PocketCAS.
It has the following limitations:
- It will plot at most two functions at a time.
- Animated plots are drawn only for one second.
- Advanced mathematical functions (e.g. integration, taylor expansion, eigenvalues, etc.) are unavailable. Calculating derivatives and basic linear algebra is available.
- Not all physical units will be available.
- Exported graphics will be watermarked.
- Importing functions and variables from other documents as well as CSV files is not available.
The remaining functionality is available in PocketCAS, also available on the App Store.

REVIEWS
"This program has an incredible amount of power for such a compact program. I teach high school math, and this program can work with all sorts of expressions, graphs, and help check my work. Definitely worth it!"

"I am 8 years old and this App is awesome! It helps you learn calculus quickly. It's a work of art!"

"One of three Apps I use when teaching A Level maths. Have recommended to numerous students. Excellent."

"This is one of the best. The CAS capabilities are compatible to only two other apps, and this one is all offline and includes countless additional features. It's never steered me wrong and is the first thing I go to when I'm in a hurry to figure something out. If you're a student this is pretty much as good as it can get."

"You will love this calculator. It's powerful to calculate everything, doesn't matter you're a high school student or college student. Specially for the people who like to solve problems with graphs!"

"This app is so powerful and slick looking. It is totally amazing and what it can do."

Please do not update to this version yet - it only shows an "Updating..." screen when trying to load a tutorial. We have found a fix and will provide it as quickly as possible.
In case you did update already and are experiencing this issue - loading your existing documents from the menu should still work.
Thanks for reading these release notes :-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

New feature: PocketCAS for Mac now supports the MacBook Pro's new touch bar.
Bugfix: Fixed some keyboard problems on iOS 10 when rotating the device.

Thanks for reading these release notes ;-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

In this update, we have renamed the "Time Graphing" feature to "Animated Graphs" in order to avoid a possible copyright dispute. We also changed the name of the animated variable from "T" to "anim". However, we also took the opportunity to add a new feature: You can now customize the name of the animated variable yourself – this should help with maintaining compatibility with your existing documents.

In addition, this update fixes a few bugs:

- CSV files without a newline at the end will now be parsed properly.
- Indeterminate limits will now return an error when the limits from above and below differ.
- Printing plots has been fixed.
- Menus will no longer appear behind the math keyboard on iOS 8.

Thank you for all the great reviews for version 3.8! As this is another update, could you please quickly post them again? That way they show up for the latest version which really helps with visibility on the App Store. Thanks a ton!

We have a few bug fixes for version 3.8 in this update:

Bugfix: The system keyboard shows up again in the 'Tools' menu of the iPhone version. Protip: You can show that keyboard more quickly by just swiping up with one finger on the PocketCAS keyboard.
Bugfix: Fixed the cursor jumping when typing at the beginning of very long entries.
Bugfix: Fixed a crash when deleting the "X/Y Precision" fields in the 3D plot settings.

Also, we have two responses to reviews for version 3.8. We can't respond to reviews directly, so we will post them here:
1. PocketCAS does _not_ require iCloud. You can use the app just fine without it. Only two minor features that are most useful to power users (subfolders and CSV import) who would probably enable iCloud anyway require it.
2. About "New Entry" mode being like writing a script: You can just enter a single line, press 'Calculate' and get the answer. How is this different from other CAS calculators? If you want an answer for other calculations, just create another new entry and calculate that separately - again, just like in other CAS calculators. If we are missing something, please send us an email via the app's support function and let us know!


Version 3.8 is one of the largest updates to PocketCAS to date, with more than 300 changes to the codebase. We hope you enjoy it!

New Feature: Support for split screen multitasking and iPad Pro! Sorry for the delay, but we had to reorganize quite a few things to support e.g. "small" mode in split screen mode. But it's finally here!
New Feature: Plot defaults. You can now change the default settings for plots in the menu (or in the app preferences on the Mac).
New Feature: Importing variables. You can now create new "Import Document" entries that will load all variables from the document you specify. This lets you e.g. create a "function library" that can be shared by multiple other documents.
New Feature: CSV Import (requires iCloud Drive). You can now load CSV files into variables to process them. See the new tutorial for an example.
New Feature: "Chaining" entries. You can now append "//!next" to the end of an entry to automatically recalculate the following one when the current one gets changes. (See the Scripting tutorial for an example.)
New Feature: Subfolders for documents. A few caveats: This only works with iCloud Drive enabled in PocketCAS and you have to manually create subfolders in the "iCloud Drive" app on your device.
Improvement: Documents, PDFs and images can now also be exported to other apps (not only via email).
Improvement: Improved the accuracy of drawing implicit plots (e.g. circles) when zooming in very far.
Improvement: You can now view the text editor's hotkeys by pressing and holding the Cmd button on Bluetooth keyboards.
Improvement: PocketCAS now supports Shared iPad for schools.
Improvement: Added planes and lines to the 3D plot tutorial.
Improvement: Even when a document causes the app to crash, it should not get stuck in a crash loop anymore.
Bugfix: Speaking of crashes, we fixed several possible crashes and other bugs. Let us know in case you still encounter problems!

New version 3.8 with lots of new features! 50% off PocketCAS pro only this week!
Thanks for reading these release notes ;-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

This is one of the largest updates to PocketCAS to date, with more than 300 changes to the codebase. We hope you enjoy it!

New Feature: Support for split screen multitasking and iPad Pro! Sorry for the delay, but we had to reorganize quite a few things to support e.g. "small" mode in split screen mode. But it's finally here!
New Feature: Plot defaults. You can now change the default settings for plots in the menu (or in the app preferences on the Mac).
New Feature: Importing variables. You can now create new "Import Document" entries that will load all variables from the document you specify. This lets you e.g. create a "function library" that can be shared by multiple other documents.
New Feature: CSV Import (requires iCloud Drive). You can now load CSV files into variables to process them. See the new tutorial for an example.
New Feature: "Chaining" entries. You can now append "//!next" to the end of an entry to automatically recalculate the following one when the current one gets changes. (See the Scripting tutorial for an example.)
New Feature: Subfolders for documents. A few caveats: This only works with iCloud Drive enabled in PocketCAS and you have to manually create subfolders in the "iCloud Drive" app on your device.
Improvement: Documents, PDFs and images can now also be exported to other apps (not only via email).
Improvement: Improved the accuracy of drawing implicit plots (e.g. circles) when zooming in very far.
Improvement: You can now view the text editor's hotkeys by pressing and holding the Cmd button on Bluetooth keyboards.
Improvement: PocketCAS now supports Shared iPad for schools.
Improvement: Added planes and lines to the 3D plot tutorial.
Improvement: Even when a document causes the app to crash, it should not get stuck in a crash loop anymore.
Bugfix: Speaking of crashes, we fixed several possible crashes and other bugs. Let us know in case you still encounter problems!

PocketCAS pro is 30% off at the moment. Get it now! http://pocketcas.com/buy
Thanks for reading these release notes ;-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

This update fixes one more crash when the device was running low on memory.

The previous update improved support for iOS 9 and OS X El Capitan. It includes support for App Transport Security as well as using the new San Francisco font everywhere. Plus, the following things have been improved:

- Some plots that did not appear in the previous version should appear again now. In case you do still encounter plots that do not show up, please try appending "//!dontDrawSpecialPoints" to that plot's line and contact us.
- There now is an iCloud Drive folder for PocketCAS.
- Along with that, iCloud document syncing might be slightly more reliable now.
- You can now "Handoff" documents in iCloud between your devices. Just open a document on one device and it will automatically show up in the other's lock screen or Dock.
- Results of ifactor() will no longer be simplified back to the original input.

Thanks for reading these release notes ;-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

This version is another minor release. But we have great plans for the next major update! For example, we're thinking of the following new features:

- Changing the default settings for plots
- Importing functions and variables from other PocketCAS documents
- Importing data in e.g. CSV format

But we're also really interested in how we can make PocketCAS better for YOU! If you want to let us know, please fill out our short survey at http://pocketcas.com/feedback. Your feedback helps us a lot!

For now, this version contains:

Improvement: Significantly improved the accuracy of detecting zeroes and extremes in plots. Most extremes should now be properly recognized as e.g. 2.0 instead of 1.9998. This is not yet perfect (for some plots 100% accurate detection might be impossible), but please let us know if you encounter any unexpected results.
Improvement (iPad): Slightly tweaked the routines responsible for sizing popovers.
Bugfix: Fixed a rare issue where tapping keyboard buttons would insert their values twice.
Bugfix: Improved handling of logarithmic plots, especially when zoomed out.

Thanks for reading these release notes ;-) You'd do us a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to us :-)

This version is another minor release. But we have great plans for the next version! For example, we're thinking of the following new features:

- Changing the default settings for plots
- Importing functions and variables from other PocketCAS documents
- Importing data in e.g. CSV format

But we're also really interested in how we can make PocketCAS better for YOU! If you want to let us know, please fill out our short survey at http://pocketcas.com/feedback - even if you sent us feedback before. It helps us a lot!

For now, this version contains:

New feature: PocketCAS now displays points in plots where a function is not defined, e.g. for x=1 in (x^2-1)/(x-1). Please let us know if you find plots where this is not the case!
Improvement: The crossP() function now also works for vectors.
Improvement: Single units will now be displayed with a "1", e.g. "N" will become "1 N".
Improvement: List/vector accesses will now be displayed as e.g. "v[0]" instead of "at(v, 0)".
Improvement (iOS): Tutorials will now only be autosaved when they're modified.
Improvement (Mac): The app's icon looks slightly better now.
Bugfix: Some matrices were accidentally displayed as lists.
Bugfix: Some plots would not show up when printing.
Bugfix: Arc seconds are handled properly now.
Bugfix: The app would crash for a few particular integrals.
Bugfix: Some plots would still crash.
Bugfix (iOS): Some plots had the wrong colors.
Bugfix (iPad): Trying to duplicate an entry could crash the app.
Bugfix (iPad): The matrix editor would sometimes not show up.
Bugfix (iPad): Keyboard sizes other than M sometimes did not show up properly.
Plus several minor improvements that didn't make it into this list ;-)

Thanks for reading these release notes ;-) You'd do me a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to me :-)

Please note that upcoming versions of PocketCAS will require iOS 7 or later. I'd love to keep supporting iOS 6 and below, but some features (e.g. a somewhat improved text editor) are impossible without iOS 7. PocketCAS 3.5 still supports iOS 5.1, though :-)

New feature: Time series plotting! You can now create plots that depend on the variable T. When you press the "Play" button in the top left of the plot, the plot will be animated for changing values of T. Try it out with the corresponding tutorial! (Note that this feature might be slow on single-core (iPhone 4 and below/iPad 1) devices.)
Improvement: You can now hide individual calculations lines completely by appending a semicolon, similar to other CAS software.
Improvement: Results will now be simplified automatically. Note that automatic simplification still is less aggressive than the simplify() function.
Improvement: You can now select custom colors for your plots.
Improvement: You can now hide special points in a 2D plot, i.e. zeroes, extremes and intersections.
Improvement: You can now plot individual points by entering e.g. "1,2".
Improvement: Performance has been improved, especially with regards to plotting.
Improvement: Startup and file loading time have also been reduced slightly.
Improvement: The maximum size of computations has been increased.
Improvement: The plotting tutorial has been split into seven (!) smaller ones covering different types of plots.
Improvement: Nautical miles (_nmi) are now supported as a unit.
Improvement (iOS): It is now possible to rename documents from the main menu.
Improvement (iOS): Improved the keyboards on both iPhone and iPad by adding another column so you can quickly access more variables.
Improvement (iOS): Pinching 3D plots now scales the entire plot rather than just the 3D axis.
Improvement (iOS): You can now customize the paper size for PDF exports.
Improvement (iOS): Added 64-bit support for the A7 processor, leading to minor performance improvements.
Improvement (Mac): The buttons in the entry editor are now represented by icons instead of text. In addition, there now is a button to show/hide the mathematical keyboard.
Improvement (Mac): You can now insert and erase variables from the entry editor.
Improvement (Mac): You can now create new entries by pressing Cmd-+.
Improvement (Mac): Added syntax highlighting for functions and variables. This feature will also come to the iOS version soon (it requires the new text editor).
Bugfix: So bugfixes. Much stable.
Bugfix (iOS): Text selection should have been improved (with another significant improvement coming with the first iOS 7-only version).

Thanks for reading these release notes ;-) You'd do me a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to me :-)

Improvement: Reduced app launch and document load times, especially when using iCloud.
Improvement: Under iOS 7, you can now press Cmd+Return on an external keyboard to start a calculation or Escape to cancel editing.
Bugfix: Fixed some layout issues with popovers.
Bugfix: Fixed an issue where plots could jump around when panning.
Bugfix: Improved the accuracy of selecting entries.

Say hello to the new iPads! 50% off for a short while!

This version fixes a crash under iOS 6 and earlier. Please apologize the frequent updates.

Thanks for reading these release notes ;-) You'd do me a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to me :-)

Version 3.4.2:
Bugfix: Fixed an issue that could cause the mathematical keyboard to enter wrong values (e.g. f' rather than diff()).
Bugfix: Fixed a crash that could occur with plots that contained invalid results.

WARNING: Please don't update if you use iOS 6 or earlier! PocketCAS 3.4.2 contains a bug that causes a crash upon launch. An update will be available shortly. Please apologize for the inconvenience.
PocketCAS for Mac is now available - 50% discount on both the Mac and the iOS version for a short while! For more details, please visit http://pocketcas.com.

This version fixes a few bugs (see below). Please apologize the frequent updates - this version should fix all remaining iOS 7-related issues :-)

Thanks for reading these release notes ;-) You'd do me a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to me :-)

Bugfix: Fixed an issue that could cause the mathematical keyboard to enter wrong values (e.g. f' rather than diff()).
Bugfix: Fixed a crash that could occur with plots that contained invalid results.

This version fixes a few bugs (see below). In addition, PocketCAS for Mac is almost ready. To get notified when it's available, please subscribe to our newsletter from within the app.

Thanks for reading these release notes ;-) You'd do me a huge favor by leaving a positive review on the App Store! If you already posted one for an older version of PocketCAS, please submit it again to make sure that it shows up for the latest version. A good App Store rating is extremely important to me :-)

Bugfix: Under iOS 7, the plot sometimes showed contents below it in fullscreen mode.
Bugfix: Under iOS 7, the value table didn't work properly.
Bugfix: Tapping "About PocketCAS" caused a crash.
Bugfix: Auto-Approximation did not work properly in some cases.

Now fully compatible with iOS 7 and available in French - 50% discount for a short while!

PocketCAS 3.4 adds full compatibility with iOS 7 while being also fully backwards-compatible with earlier versions of iOS 6. We're also working on a Mac version of PocketCAS - if you'd like to test it please get in touch and subscribe to our newsletter (either from within the app or via http://pocketcas.com/contact).

If you enjoy using the app, please leave a review on the App Store! A good reputation is very important for us. If you've rated or reviewed PocketCAS before, please do so again for the new version. You can simply go to http://pocketcas.com/rate.

Please don't send your bug reports or feature requests via the App Store - we can't respond to them. Especially, we can't reproduce issues without specific examples. Instead, to ensure a direct response from us send them from within the application or via http://pocketcas.com/contact. We're there to help you and will listen to your feature requests!

Thank you for using PocketCAS! If you enjoy using the app, please leave a review on the App Store! A good reputation is very important for us. If you've rated or reviewed PocketCAS before, please do so again for the new version. You can simply go to http://pocketcas.com/rate.

We now have a newsletter! If you want to receive updates about our mathematics software, sign up at http://pocketcas.com!

New feature: You can now enable iCloud syncing in the main menu for devices running iOS 6 and above. Please note that iCloud syncing is still considered experimental and make sure to back up your data first! Please refer to the manual for more details.
Bugfix: Fixed a bug where saving a document under the same name would delete it.
Bugfix: Fixed a few minor cosmetical issues.
Bugfix: Fixed a few bugs in the computation engine. If a particular bug was not fixed, please let us know!

Please don't send your bug reports or feature requests via the App Store - we can't respond to them. Especially, we can't reproduce issues without specific examples. Instead, to ensure a direct response from us send them from within the application or via http://pocketcas.com/contact. We're there to help you and will listen to your feature requests!