As of right now, there’s only one puzzle likely to test the programming. They have a kickstarter to help add in other puzzles.
They do have real-life variants. While the app doesn’t have the same satisfaction of moving real pieces around and the puzzles don’t look as beautiful, the fact that they’re free and available worldwide is more than makes up for it.
The only issues I have right now are some quality of life issues:
-The summary doesn’t seem to work. But that will be fixed soon since the game’s in an early build.
-Focus mode is limited in how you handle it. Rotating it 90 degrees with two fingers should be essential. A zoom in feature by double tapping may not seem important now, but it will on the more complex puzzles.
-It’s weird there’s way to skip the introduction and exit cutscenes.
While the app is small right now, it already shows what features are going to be added. The app has lots of potential to shine. I wish the app my best of luck!