Ninewise
Every square has a reason.
Classic Sudoku, honed for your phone: four difficulties, a shared Daily puzzle, and your best times — completely offline.
Coming to the App StoreComing to Google Play
- Four difficultiesEasy to Expert, every board verified to have exactly one solution.
- Daily puzzleOne date-seeded board, identical for everyone, with a streak to keep.
- Fair by designNo guessing required — pure logic, always uniquely solvable.
- Notes, undo & hintsPencil marks and free undo; a hint is there when you want it.
- Fully offlineNo accounts, no ads, no tracking, no data collection.
- Free, with an optional tipA tip is a gift — it unlocks nothing.
New to Sudoku? The Support page has a quick how-to. Questions about data? SeePrivacy.