Titpea
A path that knows you
9×9 pages that get harder after three solved unaided.
Paper Sudoku · Sudoku notebook for Android
One page a day.
Today’s page on top. A Coach in the margin. No network.
The Coach writes in the margin.
Look, then Why, and the answer only if you ask. Its marks stay on the board until you write in the cell it means.
Every day stays in the notebook.
Today’s page is on top: a 6×6 on weekdays, a 9×9 at the weekend. Turn back and every earlier day is there, stamped when it was done.
A handbook that teaches.
Every technique with a worked example from a real page, drawn the way the Coach draws it, and how well you know it: seen, practised, known.
A stamp, not a score.
A solved page says what you found. No streak. Share a result without the answers, or print a blank copy of any page.
Printed digits, your ink, pencil notes.
Pages of your own
Type in a puzzle from a book; it is checked and coached.
Read a page back
Every digit in order, with the technique behind it.
Press and slide
A loupe shows the cell you aim at; lift to write.
Today on your home screen
A widget with today’s page.
A quiet clock
Hidden while you play, and paused when you leave.
Where your data goes.
- No INTERNET permission, and no ads, accounts, analytics or server; a build check fails if the app asks for more.
- Games, results and settings stay in the app’s local database; Android’s own backup may include them, and you can turn it off.
- Sharing sends only the text you see in the share sheet; printing uses Android’s print service.
FAQ
What does it need?
Android 8.0 or later, on a phone, a tablet or a foldable. On a wide screen the notebook and the open page sit side by side. It works offline.
Where can I get it?
It is not on Google Play yet. A Play build is being prepared; until then the builds are sideload builds for testing outside Play.
Will a new build update the one I have?
From 9.0, sideload builds can be signed with one fixed key, so later builds update in place. Moving from an earlier build needs one last uninstall.
Which languages does it speak?
English, Simplified Chinese and Traditional Chinese. On Android 13 and later, the app’s language can be set in its Settings.
Does it work with TalkBack and a keyboard?
Yes. With TalkBack each cell can be written or erased from the cell itself, and the keys come straight after the board; a hardware keyboard writes digits too.
Paper Sudoku