Free · No ads · Offline
A few squares a day, a sharper mind.
Kareki offers sudoku puzzles at six difficulties. No account needed; your games, statistics and settings stay on this device.
How Kareki works
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Puzzles are generated on your device
Every new game is a puzzle created on your phone right then, so the same puzzle never comes up twice. The puzzles shipped with the app are only a fallback.
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One solution, no guessing
Every generated puzzle goes through the solver: you only see it once it is proven to have a single solution reachable by logic. Difficulty comes from the hardest technique the solution needs.
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Works offline
No connection is needed to play. No ads, no account, no data collection.
Six difficulty levels
Easy and Medium are open from the start. Higher levels unlock as you win on the level below, and Kareki tunes each puzzle to how you play.
- Easy
- Medium
- Hard
- Expert
- Master
- Extreme
One square, one decision.
Square Hunt
One square is marked and all you have to find is that square. It moves section by section, teaching a new technique in each one, so even short breaks move you forward.
Your data stays with you
Kareki has no ads, analytics or tracking, and needs no account. Your progress, statistics and settings are stored only on your own device.
- No account needed
- Your progress stays on this device