KletkaSudoku on squared paper.
Givens in pencil grey, your digits in green ink. When a grid is done, the next one is a tap away.
One more?
Coming soon to the App Store
The next grid should just be there
In many sudoku apps the next puzzle comes after a wait, a daily limit or something over the board.
And “hard” is often not that hard, a hint just drops a digit in, and a lost streak is gone for good.
How it goes
- Pick a levelEasy to Expert, or one of today's four daily grids.
- SolveTap a cell and a digit, or a digit and then cells. Hold a digit to pencil it in.
- One more?The next grid is ready the moment you finish.
Made for long evenings with a grid
Four daily grids
One for every level, the same for everyone, each with its own Game Center board.
Expert that is hard
Grids are graded by the techniques they need, up to X‑wing and swordfish. Always one solution, never a guess.
Hints that teach
A hint names the technique and shows where it works. Place the digit only if you want to.
Twelve short lessons
Each technique explained in plain words, with a real position from Kletka's own grids.
Entry that keeps up
The whole cell is the target. Cell first or digit first. Hold to make a note.
Notes done right
Nine per cell, each in its place. Undo brings back the notes a digit cleared.
A big, clear grid
The board takes the full width, with bold 3×3 box lines.
Never loses your place
Close the app mid-grid and come back to the same move. History and streak live in your own iCloud.
Your look
Light and dark, green or graphite ink, four board papers and four app icons.
Everything is in the app
Kletka is free to download, and every level, daily grid, hint, lesson and look is there for everyone from the first launch.
If you'd like to support it, there is a tip jar. It is optional and unlocks nothing.
Questions
Is everything really included?
Yes. There is nothing to buy in the app. The tip jar on this site is optional and changes nothing in the game.
Does it work offline?
Fully. Grids are built into the app; Game Center catches up when you are back online.
Will I lose my streak if I change phones?
No. History and streak sync through your own iCloud and come back after a reinstall.
How are levels decided?
By the hardest technique a grid needs. Easy needs only singles; Expert needs chains of harder steps such as X‑wing and swordfish.
Is the daily grid the same for everyone?
Yes. Four a day, one per level, and they change at midnight UTC.
Which devices and languages?
iPhone and iPad with iOS 17 or later. English and Russian.