Pikeworks
Armchair Sudoku
Out now
Sudoku in large print.
Big numbers and no timer. When you're stuck, a hint tells you which technique to use and where to look. You still place the number yourself.
Android now, iPhone soon
Only one place for this number. Row 7, column 5 takes the 1.
An example. The ringed 1s rule out every other square in that box.What it does
Sudoku with nothing in the way of it.
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Play the puzzle from your paper
Take a photo of a sudoku in the newspaper or a puzzle book. The app reads the numbers, shows you what it read so you can check it against the page, and you play it with the same hints. The photo is read on your phone and never sent anywhere.
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Easy to read
Big numbers with clear lines between the boxes. Three board colours: Paper, Night and High contrast. There's also a view that fills the screen with one box at a time.
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Easy to play
Pick a number and tap every square it goes in, or pick the square first. Undo as far back as you like. A wrong number is crossed out the moment it goes in, so a mistake never hides until the end of a row, and you can switch that off.
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Hints that teach
A hint names the technique, like a hidden single or an X wing, and lights up the squares it depends on. Three hints a puzzle are free, and there's a library that explains ten techniques in plain words.
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Five difficulties
Gentle, Steady, Tricky, Testing and Fiendish, graded by the techniques each puzzle needs. Every puzzle has one answer and never needs a guess. There's a daily puzzle too, with no streak to lose.
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Works with screen readers
TalkBack on Android and VoiceOver on iPhone read out every square with its row, column and box and what's in it, and every button is labelled.
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No account
Your games and stats stay on your phone. Back them up to a file or export a spreadsheet whenever you want. More than one person can play on the same phone.
What it costs
Armchair Sudoku is free and has adverts. This is where they go, and how to get rid of them.
- Price
- Free
- Purchases
- Sudoku Complete, or Remove adverts. One payment, not a subscription.
- Adverts
- A small banner at the top. Never in the middle of a puzzle.
There's a small banner along the top of the screen, well away from the squares and the number buttons. A full screen advert can show after you finish a puzzle, never during one, and not in your first few puzzles.
You can also choose to watch an advert for an extra hint, a day with a locked technique, a large print booklet or an hour with no adverts. In the UK and Europe the app asks whether adverts can be personalised, and you can change your answer in Settings.
Sudoku Complete is a one-off payment for unlimited hints, the whole technique library, printable large print booklets with the answers at the back, a choice of app icon, and no adverts.
Remove adverts costs less and only removes the adverts. Neither is a subscription.
Privacy and support
Your games, settings and statistics stay on this phone. There's no account to make. The full privacy policy says exactly what is kept and what is sent.