4.1
2019-05-12
Refresh with iOS 12 SDK.
4.0
2018-12-13
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".
3.5
2018-12-11
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".
3.4
2018-12-07
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)
3.3
2018-11-12
* 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.
3.2
2017-08-21
Refresh, built with latest toolkits.
3.1
2017-01-05
* Automatic detection of external keyboards.
3.0
2016-09-20
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.
2.9
2012-11-27
Ensures that tan(90) is not a number.
2.8
2012-10-21
* 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.
2.7
2012-10-02
*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.
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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
2012-09-07
** 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
2012-08-28
*** 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
2.4
2012-06-29
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.
2.3
2012-05-10
Can now email the stack (both numbers and labels). This is a convenient way to transfer calculation results.
2.2
2012-01-21
Fixed an issue with the swap (x <-> y) button.
2.1
2012-01-10
Buttons now make a click sound, if keyboard sounds have been enabled in the Settings app.
2.0
2011-06-29
* Now a universal app (displays in HD on iPads)
* Fix to swap-button issue.
1.3
2011-03-29
(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.
1.2
2010-11-01
New feature: TAP TO RECALL/EDIT
Enhancements:
- Even smoother scrolling
- Fixes to minor issues.
1.1
2010-09-28
* 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.