What's in it
One app, many puzzle types, each with a real solver behind it — so every puzzle is guaranteed solvable by reasoning alone, and every hint explains why a move follows, rather than just giving the answer away.
- MasterMind — crack the hidden colour code from feedback pegs
- 24 Game — combine four numbers with + − × ÷ to make 24
- Nonograms — reveal a picture from the row and column clues
- KenKen — a Latin square with arithmetic cages
How it's paid for
The app is free, and the free version is a real game, not a demo: several complete puzzle types plus daily puzzles across the whole catalogue. One optional one-time purchase unlocks everything, including every game added later. No adverts, no subscription, no repeat charges.
Privacy
Nothing you do in Reasoning Gym leaves your device. There is no account, no sign-in, no analytics and no advertising SDK — profiles and progress are stored only in the app's own private storage on your phone or tablet.
Availability
In testing — not yet published on Google Play