Sudoku Mission: Sudoku with no ads, no in-app purchases
1,200 puzzles graded by the techniques they actually need, a Daily Challenge everyone shares, and hints that teach instead of spoiling.
$2.99 once · iPhone, iPad and Android · works offline
At a glance
- Buy once, play forever: a single $2.99 purchase. No ads, no in-app purchases, no subscription.
- 1,200 hand-verified puzzles across five tiers: Easy, Medium, Hard, Expert and Evil.
- Daily Challenge: one board a day, the same for every player, ramping from Monday Easy to Sunday Evil.
- Hints that teach: each hint explains the deduction instead of filling in the cell.
- Ranks from Bronze to Grandmaster, medals against par time, and 18 achievements.
- Completely offline: no account, no analytics, no network requests of any kind.
- Phone and tablet, portrait and landscape, light and dark themes.
Difficulty that means something
In many Sudoku apps, “Hard” just means fewer givens. In Sudoku Mission every puzzle is solved by an engine that uses the techniques a person uses, from naked and hidden singles through locked candidates, pairs and triples, X-Wing, XY-Wing and Swordfish, and is graded by the hardest step it needs.
So a short puzzle that hinges on one X-Wing is not filed under Easy, and moving up a tier means learning something new rather than grinding longer.
Hints that make you better
Stuck? A hint names the cell and the reason, such as “R4C7 is the only cell in box 6 that can hold 8”, and lets you place the digit yourself. You finish the puzzle knowing the pattern for next time.
A Daily Challenge, ranks and medals
The Daily Challenge gives every player the same board, so a streak means something. Your rank, from Bronze to Grandmaster, comes from recent performances rather than hours played, so it reflects how you are playing now. Medals are awarded against a par time for each difficulty, points bank permanently, and results share without spoiling the board.
Built for actually playing
- Pencil marks with auto-fill and auto-clean
- Unlimited undo and redo, erase and pause
- Optional three-mistake limit and instant wrong-digit feedback
- Row, column, box and matching-digit highlighting
- Games save and resume, even if the app is closed mid-puzzle
- Landscape on tablets puts the board and controls side by side
Private by design
Sudoku Mission collects nothing. There is no account, no analytics and no server for it to talk to, so it works the same on a plane as at home. Read the Sudoku Mission privacy policy.
Frequently asked questions
Is Sudoku Mission free?
No. It is a one-time $2.99 purchase, and that is the whole price: no ads, no in-app purchases and no subscription afterwards.
Does Sudoku Mission work offline?
Yes, completely. It makes no network requests at all, so every puzzle, the Daily Challenge, stats and achievements work without a connection.
How is the difficulty decided?
By the hardest technique a person needs to solve the puzzle, checked by a solver that uses human techniques such as X-Wing, XY-Wing and Swordfish. Each of the 1,200 puzzles is verified to sit in its tier.
Does it work on iPad and Android tablets?
Yes. It runs on iPhone, iPad, Android phones and Android tablets, in portrait and landscape.
Who makes Sudoku Mission?
Rooks Labs LLC, a small software company in Utah, USA, which also makes EarnIt and Habiro.
Play Sudoku without the ads
One purchase, 1,200 puzzles, a new Daily Challenge every day, and nothing watching you play.
More from Rooks Labs: EarnIt, a chore and allowance app for families, and Habiro, a private habit tracker.