This is such a good app except for ONE thing ... The "save" function is basically useless. If you save or take a snapshot only your notations are saved, not your solved entries. I have to finish a puzzle in one sitting or it will be essentially lost. Love the calc feature. Its usable and has promise, but needs to be fixed.
If Ive missed something and am just doing something wrong, please let me know. If thats the case, the help text might need revisions.
TypoTX about KillerSudoku