To be clear from the start, the Blindfold Sudoku app does not work for me at all. It is immensely frustrating. It never registers my gestures in the correct way, and I just cannot make it work. I have been using the Sudoku for all app , Which has not been maintained for a long time and it's not even available in the App Store anymore. As of the next iOS update, it will not work at all. So I am looking for an alternative. I will miss it quite a bit when it is gone, and I'm hoping there might be something else out there. All the apps I have tested from the App Store or completely inaccessible, however