Help & Support · Izi Sudoku: Logic Puzzle Game
Need help with Izi Sudoku? Below are answers to common questions. If you can't find what you're looking for, contact us using the details at the bottom of this page — we're happy to help.
Fill the grid so every row, column and 3×3 box contains the digits 1–9 without repeats. Tap a cell, then a number. See How to Play in the app's Settings for a full guide.
Your current game is auto-saved on this device. If you reinstalled the app or switched devices without signing in, local progress can be lost. Sign in to keep your stats and games backed up.
Higher difficulties start with fewer given numbers, so they need more advanced techniques. Easy and Medium are great for learning; Hard, Expert and Evil are for a real challenge.
Sign in with Apple or Google from the Welcome or Settings screen. Your statistics, achievements and saved games then sync to the cloud and follow you to any device.
A paid ad-free option is on our roadmap. We'll announce it in the app as soon as it's available.
Go to Settings → Language and pick your language, or choose Automatic to follow your device language.
Open Settings → Notifications to turn reminders on or off. You can also manage permission from your device's system settings.
Use Send feedback inside the app to report a bug or suggestion, or email us directly using the address below.
For bug reports, suggestions or any other questions, email us. We usually reply within a few days.
Or write to izigamecompany@gmail.com.
You can also send feedback from within the app: open Settings → Help & Support → Send feedback.