Need a hand? Here's everything you need.
Yotsu is a daily logic-puzzle game: four hand-checked puzzles every day, designed to be a calm little ritual. This page answers the most common questions. If you don't find what you're looking for, just email us — we read every message.
📧 Contact: [email protected]
Each day, Yotsu gives you four puzzles — Shikaku, Akari, Binairo, and Sudoku. Solve them at your own pace. Once you've done the four, you're finished for the day. Come back tomorrow for four new ones. The difficulty rises gently over your first weeks.
Yotsu Plus is an optional one-time purchase that unlocks themes (including dark mode), unlimited practice puzzles, and advanced statistics. It is not a subscription — you pay once and keep it.
Open Settings and tap "Restore purchases". This re-checks your purchase with the App Store and unlocks Yotsu Plus. Make sure you're signed in with the same Apple Account you used to buy it. If it still doesn't work, email us.
Purchases are handled by Apple, so refunds go through Apple, not us. Visit reportaproblem.apple.com, sign in, find Yotsu Plus, and request a refund.
Yes. Everything runs on your device, so Yotsu works with no connection at all — even on a plane. ✈️
No. Yotsu collects no personal data. Your progress, streaks, and stats stay on your device. See our Privacy Policy for details.
Sorry about that! Email us at [email protected] with your device model and a short description (a screenshot helps a lot). Every puzzle is checked for a unique solution, but if something looks off, we want to know.