Improvements Needed

Sudoku is a great game. This app comes up short on features and presentation.

1) Using the "Clear All" option does not clear the memory of previous box entries. Avoid using unless diligent oversight of new entries is acceptable.
2) "Hint" hasnt worked more than once on this version.
3) App frequently crashes for no apparent reason.
-----
A very nice option would be color change for temporary numbers. Blue is difficult to see under any decent lighting on iPhone 5c.
Even better would be numbers with a more solid font.
Great game, but the app needs improvement.

bevpopp about Sudoku ⊞