For iPhone & iPad

Teaches the technique, not the answer.

A quiet, native iOS Sudoku for people who care about the puzzle. When you're stuck, the coach teaches you the technique — never the digit. Pick a cell, place a number, then ask the coach.

Download on the App Store ▶Try the coach
1/1Unique solution, every puzzle
19Variants, hand-tuned
0Trackers, SDKs, ads
∞Plays fully offline
01

Three ideas, nothing more.

No daily-streak gambling. No ads between puzzles. Just the puzzle and the quiet.

A coach that teaches.

Stuck? The hint isn't a number — it's the technique that uncovers one. The same logic a real solver uses.

Hidden Single · Box 5

Race a friend.

Real-time Race or play-when-you-can Duel — both devices play the exact same board, parallel timers.

Privacy, properly.

No analytics. No third-party SDKs. iCloud sync stays inside your Apple ID. Read every word of the policy in under a minute.

0
Trackers
0
SDKs
0
Ads
02

Classic, plus eighteen quiet variations.

Every variant uses the same teaching coach — even Killer cages earn human-readable hints.

Race a friend on the same exact board.

Real-time Race matches you through Game Center; async Duel goes out as a link. Both sides play the same starting position, and the timers run in parallel.

B
You · iPhone
00:00
Placed0 / 51
vs
E
Ece · iPad
00:00
Placed0 / 51
Zero.

No analytics. No third-party SDKs. iCloud stays inside your Apple ID. App Store privacy label: Data Not Collected.

No tracking
No telemetry
No ads
Data Not Collected

Out now. One device. One puzzle.

Designed for people who'd rather think than scroll.

Download on the App Store