Sudoku — Classic Number Game · Last updated 2 September 2026
Short version: the app has no accounts and does not identify you. Everything you play stays on your device. The app also sends anonymous counts of how the game is used — never your name, your location, or anything that points back to you — and you can switch that off in Settings.
Sudoku — Classic Number Game is published by GadGames. Contact: support@tug.today.
Nothing that identifies you. We do not ask for your name, email, phone number or location, there is no way to create an account, and no advertising identifier is requested. What we do receive is described in section 6.
The app stores the following only on your device, using the operating system's normal app storage: puzzle progress, completion statistics and streaks, your settings, and your coin balance. We cannot see any of it.
The app can read a sudoku from a photograph, and it asks for camera access the first time you use that. It is the only permission the app requests.
The photograph never leaves your device. It is written to the app's own temporary storage, read by Apple's on-device text recognition, and deleted before the scanning screen finishes — including when the scan fails. It is not saved to your photo library, it is not uploaded anywhere, and neither we nor anyone else can see it. The app does not ask for access to your photo library at all.
What is derived from the photograph and does leave the device is described in section 6: whether a puzzle was scanned or typed in, its difficulty, and three counts of how many numbers were involved. No image, and no part of the puzzle itself, is ever sent.
Purchases are handled entirely by Apple. We never see or receive your payment details. Apple tells the app whether a purchase was completed, so that it can unlock what you paid for, and reports sales to us only as aggregate figures that identify nobody.
Restoring a purchase asks Apple whether your Apple ID owns it. That exchange is between your device and Apple; no account with us is created or needed.
The app contains no advertising. There is no advertising SDK in it, no advertising identifier is requested, and nothing about you is shared with any advertising network.
If that ever changes, this page will be updated before the version that changes it is released.
To learn which puzzles are too hard, which hints go unread and where people stop playing, the app sends a small set of anonymous events: the app being opened, a puzzle being started, solved or abandoned along with its difficulty and how long it took, a hint being taken and which technique it explained, the store being opened, and a purchase or restore completing.
These events do not identify you. They carry a random string created on your device the first time the app runs. It is not your Apple ID, not your advertising identifier, and not derived from your hardware — it exists only so that sixty people solving one puzzle each can be told apart from one person solving sixty. Deleting the app destroys it, and reinstalling produces a new one that cannot be connected to the old.
The events are processed on our behalf by PostHog, which stores them without building any profile of a person. Your device's network address is visible to them in the moment of the request, as it is to any web server; it is not used to derive your location, and no location is stored.
You can turn this off. Settings → "Share anonymous usage data". Nothing is sent while it is off.
There is no advertising SDK, no crash-reporting service, and nothing is shared with any advertising network or data broker.
The app is suitable for all ages. It does not knowingly collect personal information from anyone, of any age, and the anonymous usage data in section 6 is not personal information and cannot be traced to a child or to anyone else.
Everything you play — progress, statistics, settings and coins — is held only on your device, so deleting the app deletes it. There is no account to close. The anonymous usage events in section 6 are kept for as long as they are useful for improving the game; because nothing in them identifies you, they cannot be traced back to a particular person or removed on request. If you would rather send none at all, switch the setting off.
Laws such as the GDPR and the CCPA give you rights to access, correct, export and delete personal data held about you. We hold no personal data about you: no account, no contact details, and no identifier that points to you. There is therefore nothing for us to produce or erase. If you would like this confirmed in writing, email us and we will reply.
If this policy changes, the date at the top changes with it, and any change that affects what the app does will be published before the version that makes the change is released.