Sudoku App · Free on iPhone & Android
Nineward SudokuSudoku without the circus.
Daily boards, Killer mode, teaching hints, streaks, archives, and no ads, ever.
Free to start on iPhone and Android · $4.99 one-time to own · No ads, ever.
On a computer? Scan to install Nineward Sudoku
- iPhone
- Android
Point your phone camera at the code for your phone.
How it plays
How Nineward Sudoku plays.
Play classic Sudoku, take on the shared daily, try Killer mode, race through Arcade Sprint, train on smaller boards, or import a puzzle of your own. Teaching hints explain the next technique, and no ads ever get between you and the board.
- Daily, Killer, and Arcade Sprint puzzles
- Hints that teach the logic, not just spoil the answer
- Streaks and deep archives, with Pro replays and cloud sync
Inside the app
Real screens from Nineward Sudoku.
The loop
Every run follows one honest loop.
- 01Open
- 02Pick today's board
- 03Solve in flow
- 04Learn a little
- 05Keep the streak alive
- 06Come back tomorrow.
What is inside
Inside Nineward Sudoku.
Daily, Killer, and Arcade Sprint puzzles
Pick your pace: classic daily focus, deeper Killer logic, or a faster sprint when your brain wants a quick win.
Hints that teach, not spoil
Stuck does not have to mean "show me the answer." Nineward explains the logic so you get better, not just unstuck.
Archive, streaks, and (with Pro) replays and cloud sync
Keep your history, protect your streak, and come back to the board without starting over from scratch.
Quick answers
Nineward Sudoku questions, answered
How do Nineward's sudoku hints work?
A hint explains the logic of the next step instead of showing the answer, so you get better, not just unstuck. The free tier has one teaching hint per puzzle; the full unlock gives up to 99.
Is Nineward Sudoku free?
Yes. The shared Daily, three new puzzles a day (Classic, Killer and Arcade) and one teaching hint per puzzle are free, with no ads, ever. The Nineward Full Game Unlock ($4.99 one-time) or the StackForge Play Pass adds Hard and Expert boards, no daily puzzle cap and up to 99 hints per puzzle. The ranked Daily stays free for everyone.
Can I play Nineward Sudoku in a browser?
Yes. Today's Daily and free Easy and Medium boards on Classic and the smaller boards are playable free in your browser on the Nineward Sudoku play page, with teaching hints and no sign-up. Browser play is unranked practice; the ranked Daily and its leaderboard live in the app.
Fair unlocks
Play free. Own the rest when it earns it.
Always free
Start playing today
- Shared Daily
- Three new puzzles a day (Classic, Killer and Arcade)
- One teaching hint per puzzle
Free to start on iPhone and Android.
$4.99 one-time
Free daily. Unlock the deep end.
The full unlock adds Hard and Expert boards (Killer included), no daily puzzle cap, up to 99 hints per puzzle, dot notes, the deeper archive, solve replays, full stats, extra themes, cloud sync, and friend challenges. The ranked Daily stays free for everyone.
Play Pass
One pass, every StackForge game
$2.99 a month or $14.99 a year unlocks Pro in every StackForge game, plus One Good Thing.
Store prices appear in the app in your local currency.
Our promise, in every StackForge game
No ads. Ever.
- No banners
- No videos between levels
- No watching ads for rewards
- No advertising code in any app
Our games pay for themselves with optional unlocks, never with your attention.
We never sell your data.
Not to advertisers, not to data brokers, not to anyone.
We don’t track you.
Nothing in our apps follows you across other apps or websites.
No third-party analytics.
Our games carry no outside analytics, attribution or tracking code.
No cookies. Not even here.
This website sets no cookies at all, and never measures you as an individual.
No account needed.
Every game plays without signing up. An account is optional: it carries the Play Pass between games, and cloud saves in the games that have them.
Pay once, own it.
$4.99 unlocks a game for good. A subscription is only ever an option.
Ready when you are
Play Nineward Sudoku.
Free to start on iPhone and Android, with no ads, ever.