Sudoku for iPhone
Nine by nine,
and nothing else.
Every puzzle generated fresh, with exactly one solution. Pencil marks when you want to think out loud, three hints for the cell you cannot crack, and two hundred moves of undo behind you.
How it plays
The rules you know, and no more app than that.
No streak to protect, no daily reward, no notification arriving at the moment you finally see it.
Think it through in pencil
Note the candidates as small digits, and tap the same key again to rule one out. Commit a digit and that cell's marks clear with it, and undo takes back the pencilling as well as the moves — two hundred steps of it.
A conflict you can see coming
Put a digit where it cannot go and the cells that disagree tint rather than shout. The same digit elsewhere on the board lights up separately, so you can follow one number around the grid without hunting for it.
Three hints, and you choose where
Pick the cell that has you stuck and a hint answers that one — not a square somewhere else you were not asking about. Three per puzzle, and the counter is always in view, so spending one is a decision rather than a reflex.
Sideways
Turn it, and the board turns with you.
Landscape is a different screen rather than the same one rotated: the grid takes one side and the controls the other, so both thumbs reach without the board shrinking to make room.
Levels
Four, and they mean what they say.
Difficulty is measured by the techniques a puzzle actually requires, not by how many digits were removed.
- Easy
- Singles. A puzzle for a coffee.
- Medium
- Hidden singles and pairs.
- Hard
- Pointing pairs, box–line reduction.
- Expert
- X-wing and beyond. An evening.
Every lokalt app
A quiet place to think — the same four places, the same promise, whichever puzzle you came for.
Sound and colour move together. There is not one audio file in the app: a filtered noise bed, a drone beneath it, and five bell voices on periods sharing no common multiple, so the pattern never comes round again inside a sitting. Pick a place — this page changes with it.
Forest
Wind through pine trees
Ocean
Waves along the shore
Mountain
Still air and distant weather
Desert
Dry air over open sand
The lokalt promise
It stays on your phone.
- No adsNot a banner, not an interstitial, not a rewarded video.
- No subscriptionPay once, for life. There is no plan to cancel and no renewal to forget.
- No sign-inNo account to make, so nothing to lose.
- No trackingNo analytics, no crash reporting, no identifier.
- No networkNo requests at all. Even the typefaces travel in the bundle.
Price
One puzzle a day, free. The rest, once.
Free
A puzzle a day- A fresh Easy puzzle every morning
- All four places, both appearances
- Every feature on the board
- No payment and no account
Pro
Every puzzle, for life- Medium, Hard and Expert as well
- As many as you like, whenever you like
- Pay once — yours for life
More from lokalt
Sudoku
Nine by nine, and nothing else.
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Cages, and the arithmetic inside them. Same quiet, different sums.
Out nowKakuro
Sums, and the runs that make them. Same quiet, different arithmetic.