Sudoku by Bonendo does not collect, store, or share personal data.
Effective 19 September 2026. Applies to both versions of Sudoku by Bonendo, published by Melek Ceylan: the iOS app (bundle identifier com.bonendo.SudokuApp) and the Android app (package com.bonendo.sudoku). Where the two differ, the section says so.
Both apps keep your games, statistics, technique progress and preferences on your device. Nothing about how you play is sent to us, because there is no server of ours to send it to.
On iPhone and iPad, if iCloud is turned on for the app, it also keeps them in your own private iCloud storage, so they come back after you reinstall and stay the same on your iPhone and iPad. That storage belongs to your Apple Account: only you can read it, and we cannot see it. Deleting the app removes the copy on that device. To remove the iCloud copy too, delete your games in the app first, or remove the app's data in iOS Settings under your name › iCloud › Manage Storage.
On Android, if the system backup is turned on — it is on by default — a copy is kept in your own Google Account, so your games come back when you reinstall the app or set up a new phone. That copy belongs to your Google Account, not to us: we cannot see it, and we are not told it exists. Uninstalling the app removes the copy on that device. The backup copy is managed by Android rather than by the app: on most phones you can review and delete device backups in the Google One app under Storage › Device backups, or turn backup off for the app in Android Settings under Google › Backup.
If you choose to sign in to Game Center on iOS, Apple handles your identity, your leaderboard scores, and your achievements under Apple's privacy policy. The app sends Game Center your tournament point totals and achievement progress, and displays the rankings Apple returns. The app does not receive or store other players' data beyond showing the leaderboard page that Apple provides. You can play every part of the app without signing in.
The Android app has no sign-in of any kind, and sends no scores or achievements anywhere. If Google Play Games is added to it, this page will be updated, with a new effective date, before that version is released.
Both apps download the same list of upcoming tournaments from a server. That request carries only a public project key that identifies the list, and no information about you or your device beyond what any web request includes. It sends nothing about your games. The list is cached on your device so the app can show it offline.
On iOS, the optional supporter purchase is processed by Apple through the App Store under Apple's terms and privacy policy. The app receives only whether the purchase was made, and stores nothing about it. Restoring the purchase asks Apple, not us. The Android app has no purchases; if one is added, this page will say so before that version is released.
Tournament reminders are scheduled on your own device when you opt in on the Events tab — as local notifications on iOS, and on Android when you tap Remind me, at which point Android asks your permission. They are not push notifications: nothing is sent to or through any server, and neither app contains a messaging service. You can turn them off in the app, or in iOS or Android settings, at any time.
Neither app contains advertising or chat, and neither has any way to enter personal information — there is no name, email or sign-in field anywhere in either of them. Because the apps collect no data at all, they collect none from children. The For Kids section works exactly like the rest of the app and keeps its progress on the device in the same way.
The iOS app is rated 4+, and its one optional purchase goes through Apple, where parental controls such as Ask to Buy apply. The Android app's rating comes from Google Play's own questionnaire and is shown on its Play listing.
If this policy changes, the new version will be published at this address with a new effective date. A change that made either app collect data would also be described in that app's App Store listing, or in its Data safety information on Google Play.
Questions about privacy: sudoku@bonendo.com.