3.4
2022-02-22
Colors updated and made ready for iOS 15.
3.3
2021-01-29
Colors updated to better match dark mode
3.2
2021-01-27
UI updated for dark mode, and a minor display bug fixed
3.1
2020-02-04
Minor UI updates
3.0
2020-01-26
Update to support iOS 13
2.1
2017-08-13
A few bug fixes and tweaks to the UI.
2.0
2016-10-04
The app has been updated for iOS9.
1.3
2011-10-09
Fixed a minor issues with the keyboard blocking the selection of certain options in a modal view.
1.2
2011-08-15
Added better icons for retina displays, and fixed some minor issues with a custom popover. Cleaned up the new selection view
1.1
2011-07-29
The algorithms used for selecting suitable pairs of numbers has been refined to limit the appearance of zero. The color scheme has been changed to stand out more. The different levels no longer rely on numbers to indicate difficulty, but instead a combination of icons and words.