Update a dud!
The old app functioned perfectly. With the new update there is a loading delay, it wiped out the best score history, numbers no longer gray out when completed, and the difficulty stars are always one when you complete a puzzle no matter what level puzzle you choose.
I do find the hover and capture feature interesting and it seems to be faster than taking the picture and then mapping.
AirExpress about
Sudoku Grab, v2.0.1