Sudoku, just like it used to be in the daily paper.
An iOS app with one puzzle a day — the same one for everyone on Earth — and nothing else.
One a day.
Every day there is one puzzle. It is the same puzzle in Berlin, Tokyo and Ohio, so you can compare notes — or complain about Thursday’s. The next one arrives at midnight UTC, like the morning paper. The newspaper never gave you two.
If you fill in a wrong number, the app says nothing. Checking your work is your job, the way it always was. Black ink on paper; no color anywhere.
Pencil marks exist. You can turn even those off.
The feature list, in full
No ads.
No hints.
No timer.
No statistics.
No streaks.
No color.
If one a day is not enough.
A single one-time purchase unlocks unlimited puzzles. There is no subscription — the newspaper never asked for a monthly commitment, and neither do we. The daily puzzle stays free either way.
Free. There are no ads in the free version either — there are no ads anywhere.
A note from the developer
I have been building sudoku apps since 2011. This year I redesigned my main one, and some longtime players wrote to say it had become too much. They were right. Sudoku Purist is for them — everything removed, nothing added.
— Joseph Keitgen
Want variants, statistics, themes and more? That is our other app, Sudoku by Joseph.