Flawed -- allows mistakes to end a game – Sudoku 101 (Free) Review

Try this -- If you are two squares away from completing a puzzle, reverse your answers. This invalidates the rows and columns that those particular answers are in, yet the game still says that you've completed the game. I've duplicated this in both easy and medium difficulty in the free version. I do like the interface and quick startup, but this problem really bugs me.
Review by Cloudster on Sudoku 101 (Free).