Sudoku Inveni

Sudoku the way it should be — no ads, no tracking, no sign-up. Just you and the puzzle.

Most free Sudoku apps interrupt you with ads, ask you to watch a video for a hint, or quietly track what you do. This Sudoku doesn't. It's a clean, calm, offline number puzzle built by an independent developer who just wanted a quiet place to play Sudoku and train the brain.

WHY YOU'LL LIKE THIS SUDOKU
- No ads. Not one — not even "watch a video for a hint." A promise, not a trial.
- No sign-up, no account. Open the app and you're playing in two seconds.
- No tracking, no data collection. What happens on your phone stays there.
- 100% offline. Play this Sudoku anywhere — no signal needed.

EVERYTHING INSIDE, ALWAYS FREE
- Four difficulty levels: Easy, Medium, Hard, and Expert
- Every puzzle has one guaranteed unique solution — no ambiguous boards, ever
- Unlimited undo and redo
- Pencil notes for marking candidates
- Smart highlighting: rows, columns, boxes, and matching numbers
- A live count of how many of each number are left
- Optional timer you can hide — zero pressure
- Configurable conflict checking: real-time, on request, or never
- Limited hints per puzzle — never gated behind an ad

MADE TO FEEL GOOD
- Statistics: your best times and puzzles solved, per difficulty
- Light and dark themes, plus extra color themes
- Small, fast, and lightweight
- Available in 16 languages
- No unnecessary permissions — a Sudoku doesn't need your location or contacts

Whether you're a beginner learning Sudoku or an expert chasing a faster time, this is a logic puzzle and brain game that respects you.

If you've been looking for a free offline Sudoku without the noise — no ads, no tracking, just a calm number puzzle — this is it.

Just you and the puzzle.