Scrolling RPN Calculator
$2.99
4.1for iPhone, iPad
Age Rating
Scrolling RPN Calculator Screenshots
About Scrolling RPN Calculator
The only fully featured scientific RPN calculator with a modern iOS interface: Scroll through panels of operation-buttons with a swipe of your finger. Scroll through numbers to review (and edit) your entries and calculation results. Share or transfer your results by emailing the stack.
The Scrolling Scientific Calculator gives you fast access to both basic and scientific operations with large buttons in both portrait and landscape orientations.
* Adding machine: What is the most common use for a calculator? Adding numbers, of course! Just enter the numbers, review them by scrolling, with a swipe of your finger, then hit the [total] button. No more entering numbers twice to check your calculation.
* Statistics: Enter the numbers, review them by scrolling, with a swipe of your finger, then hit the [stats] button. The following statistics are added to the stack and labelled:
Count,
Total,
Total Of Squares,
Product,
Maximum,
Minimum,
Range,
Mean,
Median,
Mode,
Root Mean Square,
Geometric Mean,
Variance,
Unbiased Sample Variance,
Population Standard Deviation,
Sample Standard Deviation.
* No awkward 80's style retro interface: Scroll through panels of large operation buttons by swiping left and right.
* Operations include: total, count, mean, median, mode, variance, standard deviation (population & sample), trigonometric, hyperbolic, logarithmic, powers, roots, inverse, factorial, percent, add, subtract, multiply, divide, etc.
* Value formatting: Specify either the number of significant digits, or number of fraction digits after the decimal point. International number formats with group separator.
* Display numbers as hexadecimal by simply scrolling to the hexadecimal panel.
* Reverse Polish notation (RPN) operation.
The Scrolling Scientific Calculator is ideal for:
* Anyone who adds numbers together (e.g. receipt values.)
* Anyone recording sample readings to find averages, variances and standard deviations.
* Anyone who wants a scientific RPN calculator, and is looking for a modern, uncluttered interface ideal for their iPhone, iPod Touch or iPad.
* Kids (!) learning to add and subtract love entering the numbers and seeing them on the screen before they hit the + or - operation buttons. They can talk through the operation as it happens.
Note: This is an RPN calculator, so there is no "=" button. Proposed in the 1950s by Australian philosopher Charles L Hamblin, RPN is the way most people would actually calculate an expression in their head or on paper: "1 enter 2 enter +" instead of "1 + 2 =".
The Scrolling Scientific Calculator gives you fast access to both basic and scientific operations with large buttons in both portrait and landscape orientations.
* Adding machine: What is the most common use for a calculator? Adding numbers, of course! Just enter the numbers, review them by scrolling, with a swipe of your finger, then hit the [total] button. No more entering numbers twice to check your calculation.
* Statistics: Enter the numbers, review them by scrolling, with a swipe of your finger, then hit the [stats] button. The following statistics are added to the stack and labelled:
Count,
Total,
Total Of Squares,
Product,
Maximum,
Minimum,
Range,
Mean,
Median,
Mode,
Root Mean Square,
Geometric Mean,
Variance,
Unbiased Sample Variance,
Population Standard Deviation,
Sample Standard Deviation.
* No awkward 80's style retro interface: Scroll through panels of large operation buttons by swiping left and right.
* Operations include: total, count, mean, median, mode, variance, standard deviation (population & sample), trigonometric, hyperbolic, logarithmic, powers, roots, inverse, factorial, percent, add, subtract, multiply, divide, etc.
* Value formatting: Specify either the number of significant digits, or number of fraction digits after the decimal point. International number formats with group separator.
* Display numbers as hexadecimal by simply scrolling to the hexadecimal panel.
* Reverse Polish notation (RPN) operation.
The Scrolling Scientific Calculator is ideal for:
* Anyone who adds numbers together (e.g. receipt values.)
* Anyone recording sample readings to find averages, variances and standard deviations.
* Anyone who wants a scientific RPN calculator, and is looking for a modern, uncluttered interface ideal for their iPhone, iPod Touch or iPad.
* Kids (!) learning to add and subtract love entering the numbers and seeing them on the screen before they hit the + or - operation buttons. They can talk through the operation as it happens.
Note: This is an RPN calculator, so there is no "=" button. Proposed in the 1950s by Australian philosopher Charles L Hamblin, RPN is the way most people would actually calculate an expression in their head or on paper: "1 enter 2 enter +" instead of "1 + 2 =".
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What's New in the Latest Version 4.1
Last updated on May 12, 2019
Old Versions
Refresh with iOS 12 SDK.
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Version History
4.1
May 12, 2019
Refresh with iOS 12 SDK.
4.0
Dec 12, 2018
New in 4.0: Support for iPhone X/XR/XS and 2018 iPad Pro displays.
New in 3.5: Fixed a bug that can appear in Hexadecimal mode.
New in 3.4: More tweaking to the affect of changing Digits Mode:
* As before, all values on the stack are stored in full precision.
* As before, changing the Digits Mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values. The stored values are not changed.
* What's new: Operations will use the value of stack items "as displayed" for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] twice.
(Value 33.3333333 is now on the stack three times.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33, 33.3 and 33.33 are on the stack.)
- Key [Add]
(Values 33.33 and 66.66 are on the stack.)
- Change mode back to Mixed Fraction, 7 decimal places.
(Values 33.3333333 and 66.66, (not 66.6666666) are on the stack.)
This is because the first value is still "100 divided by 3" and the second is the "33.33 + 33.33".
New in 3.5: Fixed a bug that can appear in Hexadecimal mode.
New in 3.4: More tweaking to the affect of changing Digits Mode:
* As before, all values on the stack are stored in full precision.
* As before, changing the Digits Mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values. The stored values are not changed.
* What's new: Operations will use the value of stack items "as displayed" for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] twice.
(Value 33.3333333 is now on the stack three times.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33, 33.3 and 33.33 are on the stack.)
- Key [Add]
(Values 33.33 and 66.66 are on the stack.)
- Change mode back to Mixed Fraction, 7 decimal places.
(Values 33.3333333 and 66.66, (not 66.6666666) are on the stack.)
This is because the first value is still "100 divided by 3" and the second is the "33.33 + 33.33".
3.5
Dec 11, 2018
New in 3.5: Fixed a bug that can appear in Hexadecimal mode.
New in 3.4: More tweaking to the affect of changing Digits Mode:
* As before, all values on the stack are stored in full precision.
* As before, changing the Digits Mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values. The stored values are not changed.
* What's new: Operations will use the value of stack items "as displayed" for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] twice.
(Value 33.3333333 is now on the stack three times.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33, 33.3 and 33.33 are on the stack.)
- Key [Add]
(Values 33.33 and 66.66 are on the stack.)
- Change mode back to Mixed Fraction, 7 decimal places.
(Values 33.3333333 and 66.66, (not 66.6666666) are on the stack.)
This is because the first value is still "100 divided by 3" and the second is the "33.33 + 33.33".
New in 3.4: More tweaking to the affect of changing Digits Mode:
* As before, all values on the stack are stored in full precision.
* As before, changing the Digits Mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values. The stored values are not changed.
* What's new: Operations will use the value of stack items "as displayed" for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] twice.
(Value 33.3333333 is now on the stack three times.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33, 33.3 and 33.33 are on the stack.)
- Key [Add]
(Values 33.33 and 66.66 are on the stack.)
- Change mode back to Mixed Fraction, 7 decimal places.
(Values 33.3333333 and 66.66, (not 66.6666666) are on the stack.)
This is because the first value is still "100 divided by 3" and the second is the "33.33 + 33.33".
3.4
Dec 6, 2018
More tweaking to the effect of changing Digits Mode:
* As before, all values on the stack are stored in full precision.
* As before, changing the precision mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values.
* What's new: Operations will use the value of stack items as displayed for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] again.
(Value 33.3333333 is repeated on the stack.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33 and 33.33 are on the stack.)
- Key [Add]
(Value 66.66 is on the stack)
- Change mode back to Mixed Fraction, 7 decimal places.
(Value 66.66, not 66.6666666 is on the stack)
* As before, all values on the stack are stored in full precision.
* As before, changing the precision mode (fixed fraction, mixed fraction or significant digits) or the number of decimal places will only affect the display of stack values.
* What's new: Operations will use the value of stack items as displayed for the current Digits Mode.
Example:
- Set mode to Mixed Fraction, 7 decimal places.
- Key in 100, 3, [Divide], [Enter]
(Value 33.3333333 is on the stack.)
- Key [Enter] again.
(Value 33.3333333 is repeated on the stack.)
- Change mode to Fixed Fraction, 2 decimal places.
(Values 33.33 and 33.33 are on the stack.)
- Key [Add]
(Value 66.66 is on the stack)
- Change mode back to Mixed Fraction, 7 decimal places.
(Value 66.66, not 66.6666666 is on the stack)
3.3
Nov 11, 2018
* Rebuilt with iOS 12 SDK.
* Bug fix to the display of decimal-place precision: Returning to original & expected behaviour, changing the display format only effects the display of values on the stacks, not the underlying high-precision values.
* Bug fix to the display of decimal-place precision: Returning to original & expected behaviour, changing the display format only effects the display of values on the stacks, not the underlying high-precision values.
3.2
Aug 21, 2017
Refresh, built with latest toolkits.
3.1
Jan 4, 2017
* Automatic detection of external keyboards.
3.0
Sep 19, 2016
A complete rebuild of the interface, yet familiar for existing users. This version introduces:
- Support for 64-bit devices and all screen sizes.
- External keyboard data entry.
- Bar graphing of stacks values.
- Swipe to edit or delete values on the stack.
- Maintains 4 separate stacks.
- Support for 64-bit devices and all screen sizes.
- External keyboard data entry.
- Bar graphing of stacks values.
- Swipe to edit or delete values on the stack.
- Maintains 4 separate stacks.
2.9
Nov 26, 2012
Ensures that tan(90) is not a number.
2.8
Oct 20, 2012
* Fix to landscape display for iOS4 & 5 devices.
New to version 2.7:
*The larger screen size on the iPhone 5 and new iPod Touch allows more stack items to be displayed.
** This update only supports devices with iOS4.3 or above.
New to version 2.7:
*The larger screen size on the iPhone 5 and new iPod Touch allows more stack items to be displayed.
** This update only supports devices with iOS4.3 or above.
2.7
Oct 1, 2012
*The larger screen size on the iPhone 5 and new iPod Touch allows more stack items to be displayed.
** This update only supports devices with iOS4.3 or above.
-------------
IMPORTANT: This update adds support for the 4" screen size of iPhone 5 and the iPod Touch 5th-gen, and for iOS 6. Unfortunately, this update also breaks landscape orientation for iOS4/5. A fix has been submitted to Apple, and should be available as another free update any day now. Thanks for your patience.
** This update only supports devices with iOS4.3 or above.
-------------
IMPORTANT: This update adds support for the 4" screen size of iPhone 5 and the iPod Touch 5th-gen, and for iOS 6. Unfortunately, this update also breaks landscape orientation for iOS4/5. A fix has been submitted to Apple, and should be available as another free update any day now. Thanks for your patience.
2.6
Sep 6, 2012
** Fix for iOS4 users
2.5 features:
- Improved numeric formatting of results: Max fraction digits (default), fixed fraction digits (useful for currency calculations), and max significant digits (useful for science and engineering lab work).
- New look user interface
- Memory leaks resolved
2.5 features:
- Improved numeric formatting of results: Max fraction digits (default), fixed fraction digits (useful for currency calculations), and max significant digits (useful for science and engineering lab work).
- New look user interface
- Memory leaks resolved
2.5
Aug 27, 2012
*** ALERT: This update is not working on iOS4 devices. A fix has been created, and submitted to Apple for review. If you are using iOS4, please hold off upgrading until version 2.6 is released. Apologies for the inconvenience.
- Improved numeric formatting of results: Max fraction digits (default), fixed fraction digits (useful for currency calculations), and max significant digits (useful for science and engineering lab work).
- New look user interface
- Memory leaks resolved
- Improved numeric formatting of results: Max fraction digits (default), fixed fraction digits (useful for currency calculations), and max significant digits (useful for science and engineering lab work).
- New look user interface
- Memory leaks resolved
2.4
Jun 28, 2012
New panels:
- Hyperbolic sin, cos, tan
- Add percent and subtract percent
New statistics: Now includes Total, count, mean, median, mode, variance, standard deviation and sample standard deviation.
VoiceOver control
Currency: 2-Fraction mode will always display two fractional decimal places, making it ideal for currency calculations.
- Hyperbolic sin, cos, tan
- Add percent and subtract percent
New statistics: Now includes Total, count, mean, median, mode, variance, standard deviation and sample standard deviation.
VoiceOver control
Currency: 2-Fraction mode will always display two fractional decimal places, making it ideal for currency calculations.
2.3
May 9, 2012
Can now email the stack (both numbers and labels). This is a convenient way to transfer calculation results.
2.2
Jan 20, 2012
Fixed an issue with the swap (x <-> y) button.
2.1
Jan 9, 2012
Buttons now make a click sound, if keyboard sounds have been enabled in the Settings app.
2.0
Jun 28, 2011
* Now a universal app (displays in HD on iPads)
* Fix to swap-button issue.
* Fix to swap-button issue.
1.3
Mar 28, 2011
(A) Specify either the number of significant digits or number of fraction digits.
(B) International number formats with group separator:
"1,234,567.89"
"1,234,567·89"
"1 234 567.89"
"1 234 567,89"
"1.234.567'89"
"1.234.567,89"
"1˙234˙567,89"
"1'234'567,89"
(C) The "clear stack" gesture is now a swipe instead of a double-tap, which means you can 'backspace' faster.
(B) International number formats with group separator:
"1,234,567.89"
"1,234,567·89"
"1 234 567.89"
"1 234 567,89"
"1.234.567'89"
"1.234.567,89"
"1˙234˙567,89"
"1'234'567,89"
(C) The "clear stack" gesture is now a swipe instead of a double-tap, which means you can 'backspace' faster.
1.2
Nov 1, 2010
New feature: TAP TO RECALL/EDIT
Enhancements:
- Even smoother scrolling
- Fixes to minor issues.
Enhancements:
- Even smoother scrolling
- Fixes to minor issues.
1.1
Sep 28, 2010
* More in-app documentation of features, usage and examples.
* Updated panel layout, placing often used features in easier reach.
* Choice of trig mode (degrees, radians or gradians) now saved, even if not using multitasking.
* Fixes to minor issues.
* Updated panel layout, placing often used features in easier reach.
* Choice of trig mode (degrees, radians or gradians) now saved, even if not using multitasking.
* Fixes to minor issues.
1.0
Sep 18, 2010
Scrolling RPN Calculator FAQ
Click here to learn how to download Scrolling RPN Calculator in restricted country or region.
Check the following list to see the minimum requirements of Scrolling RPN Calculator.
iPhone
iPad
