Sudoku for iPhone
The Sudoku that notices you.
A calm daily puzzle and a coach, the Smith, who quietly notices how you play. No ads. No account. No lecture when you miss a day.
Free · iPhone · English and Polish
The Smith
nearly done, this one. the last few cells are yours.
A board, twenty cells from the end. In the app you finish it, and the Smith notices how.
On your iPhone
The app, as it is.
Six real screens, straight from the app. No mock-ups.
Today's Daily, waitingNo streak guilt. No shame screens. Just sudoku. 
A calm daily ritualOne fresh puzzle, every day. 
Get genuinely betterHints that teach, not spoil. 
Quiet. Yours. No nagging.No ads, no fake urgency, just the win. 
A coach who noticesHis lines arrive in your notifications, signed with a hammer. 
Watch yourself get sharperA mastery score built from how you actually play.
The Smith
A coach who notices, and mostly keeps quiet.
The Smith is the craftsman the app is named for. He sees how you actually play: when, how fast, with how many hints. Now and then he says one true thing about it. At most once a session, and often nothing at all. That is why it lands when he does.
- When you solve before nine, twice in a week
- before 9 again. the day doesn't stand a chance.
- When you finish four in a row without a hint
- no hints again. you'd rather wrestle it than ask. respect.
- When you solve one clean, and faster than your usual
- quick and clean. no hints, no slips. that's the good stuff.
- When you come back after a few days away
- been a minute. board kept your seat warm.
- When you miss a day and lose a streak
- streak's back to zero. happens to everyone with a pulse. start another?
- When you play past eleven at night
- late one tonight. i'll keep the lamp on.
Every line comes from something you did. He never guesses, and he never scolds.
Hints
A hint that stops when you say so.
Ask the Smith and he doesn't just fill the cell in. He goes down three steps, and you can stop on any of them.
Focus
He shows you where to look.
Reason
He tells you why it works there.
Apply
Only now does the digit go in, and only now is a hint spent.
Inside
What's in the workshop.
- The Daily
- One fresh puzzle a day and one clear goal. Your streak is there if you want it.
- Streak freezes
- Miss one day and your next solve covers it. You earn a freeze every seventh day and can hold two. There is no red screen either way.
- The Apprenticeship
- New to Sudoku? Two short lessons take you from the one rule to reading a board.
- Pattern Trainer
- Drills of 30 to 90 seconds, from singles, pairs and triples up to X-Wing, Swordfish, Y-Wing and Unique Rectangle. The hint names the technique; the trainer drills it.
- Mastery
- Every solve earns XP, and no-hint wins earn the most. Your tier is a record of how far you've come, with five scores built from how you actually play.
- Weekly league
- You against your own best week. No strangers, no fake opponents.
- Challenge a friend
- Finish the Daily and send a short code. Your friend plays the same board: fastest time wins, and each hint adds 30 seconds. They need the app too.
- The Smith's Hall
- Weekly quests and limited-time forge events pay out pieces. Spend them on board accents, frames, celebrations and sound sets. Nothing is ever taken away.
- Focus mode
- One puzzle, with Ninesmith's own toasts and reminders held until you finish. It can't silence other apps; Do Not Disturb is still yours to switch on.
- Six themes
- All free, each checked for readable contrast. Try them on this page:
Your data
No account. No ads. No tracking.
The game runs on your iPhone, and the puzzles need no connection. There is nothing to sign up for.
Two things do leave the phone. If you buy Premium, Apple handles the payment and RevenueCat checks your entitlement with a random ID that isn't tied to your name or email. And your progress is included in your own iCloud backup, so a new phone doesn't start from zero.
Questions
Is it really free?
Yes. Classic play at every difficulty, the Daily, both lessons, the trainer up to triples, all six themes and the league are free, and there are no ads in any tier. Premium is optional: it adds the four advanced techniques in full and deepens the coaching and the stats.
Does it work on iPad or Android?
Not for now. Ninesmith is an iPhone app and needs iOS 15.1 or later.
Do I need an account?
No. There is no sign-up and no login. Your progress lives on your phone and in your own iCloud backup.
What happens when I miss a day?
If you have a streak freeze, your next solve covers the missed day. You earn one every seventh day and can hold two. If you have none, the streak starts again, and nobody lectures you about it.
What if I get stuck?
Ask the Smith. He shows where to look, then why, and places the digit only if you ask. Only that last step spends a hint. The free tier includes one coach hint per puzzle.
Can I turn off the mistake limit?
Yes. By default three mistakes end a puzzle. You can switch the limit off in Settings, and new players choose how they like to play on first launch.
How do I move my progress to a new iPhone?
Progress is part of your iCloud backup. Restore the new phone from that backup and your streaks and stats come with it. Premium follows your Apple ID: use Restore Purchases in the app.
How do I cancel Premium?
Subscriptions are managed in your App Store account: Settings, your name, Subscriptions. The lifetime plan is a single payment with nothing to cancel.
Which languages does it speak?
English and Polish. The app follows your phone's language.
Who makes it?
One developer in Poland, who plays it every day.
Today's puzzle is ready.
It'll keep. So will your seat.
Get it on the App StoreFree. No ads. No account.