Good idea, but needs some work.
I like the idea of the unlockable wallpapers, but have found this app to be buggy. First of all, it crashes EVERY time I press the save button, losing any notes or numbers I had entered (hence the one star rating). Also, it says in the instructions that the games you already solved will be in the solved section. They aren't. In fact, there is no solved section. I've solved games from every level of difficulty but no solved section. They are removed from the unsolved section and the in progress section and are gone. The app also crashes in the middle of solving a puzzle, again losing anything entered. I clicked the link above for support, but found the contact link on their website to not work, so I can not get any help for the crashes and missing solved puzzles. :( So if the developer reads these...PLEASE! fix the crashes for the save button!!