Easier than paper puzzles
I especially like the note taking mode for keeping track of possible solutions. Also the green highlighting of all occurrences of the active number makes it easy to see patterns.
My biggest gripe comes when I have "fat fingers" and hit the wrong number, or when I think Im making an entry in note taking mode, but its actually in selection mode.
You can bring up a game in progress and it resumes the scoring clock from when you left off. Good for doctors offices and grocery lines.
Buy the ad-free version: more space for the number selection pallet.
Vectordad about
▻Sudoku +, v4.6