Sudoku

Last updated: August 28, 2026

1. The short version

This is the privacy policy for Sudoku by Life in Motion Apps — the Android and iOS app published as com.everydaylife.sudoku. It covers that app and nothing else.

The game has no account, no sign-in and no server of ours. Your puzzles, your progress and your statistics are written to your device and stay there; uninstalling the app deletes them.

Two companies receive anything at all: Google — through AdMob for the ads, and through Firebase for measuring how the app is used and for reports when it crashes — and RevenueCat, which checks that a purchase is still valid. Advertising and measurement do not start unless you agree to them, and refusing means no ad is requested at all.

We never see your name, your email address or your payment details. We do not sell anything about you, and we build no profile of you ourselves.

2. Who we are

Sudoku is made and published by Life in Motion Apps, and we are responsible for what this policy describes. The address at the end of it reaches the person who builds the app.

3. What is stored on your device

Your saved games, per-variant statistics, difficulty progress, daily streak, Daily Challenge results, the reminder setting, whether you have removed ads, and the consent answers you gave. All of it is written to the app’s own private storage, where no other app can read it.

It never leaves the device and is never sent anywhere. On Android the app opts out of Google’s automatic backup, so none of it is copied to your Google account; on iOS it sits in the app’s container and is included in a backup only if you make one yourself.

There is nothing in it that identifies you. It is a list of puzzles and times.

4. Advertising (Google AdMob)

The free version shows ads supplied by Google AdMob: a banner, an occasional full-screen ad between games, and the videos you can choose to watch for a hint or an extra heart. Before any ad is requested you are asked for consent through Google’s own consent form; on iOS you are also asked Apple’s App Tracking Transparency question. If you do not consent, no ad is requested at all.

With consent, Google may process a device advertising identifier, coarse location derived from your IP address, and interactions with the ads shown, in order to select and measure them. Google’s own policy governs that processing: https://policies.google.com/technologies/partner-sites

The consent form is asked once, before the first ad. To change that answer afterwards: on iOS the tracking permission sits in the system settings under Privacy & Security → Tracking; on Android your advertising identifier can be reset or deleted in the system settings, which stops ads from being personalised. Reinstalling the app clears the answer and asks again. Buying Sudoku Pro removes every ad, and with it every ad request.

5. How the app is used (Google Analytics for Firebase)

With the same consent that allows ads, the app records what happens inside it: the app opening, a puzzle started, solved or abandoned along with its variant, difficulty, time, mistakes and how full the board was, a hint or a rewarded video used, a purchase completed or restored, a reminder switched on, and a puzzle that took too long to generate.

That list is fixed in the app’s code, and so is the shape of each entry: numbers, true or false, and short words from a known set. Free text is refused rather than shortened, which is what stops a name or an identifier ever being carried out this way. Google receives those events together with an app instance identifier it generates itself, your device model, your operating system version and a country worked out from your IP address.

We use it for one thing: to see which variants and difficulties people actually play, and where they give up. Refusing consent stops the recording before it starts, and if the answer changes later the app clears what it was holding. Firebase keeps the events for at most 14 months and then deletes them. Google’s policy for these services: https://firebase.google.com/support/privacy

6. When the app crashes (Firebase Crashlytics)

If the app crashes or freezes, a report is sent so that it can be fixed. It carries the point in the code where it happened, the app version, the device model and operating system version, the time, and a random installation identifier Firebase generates. It carries none of your puzzles, none of your statistics, and nothing you typed — there is nothing here to type.

In the EEA and the UK this rests on our legitimate interest in keeping the app working. It is not used for advertising and it is not joined to the advertising data above.

7. Purchases (RevenueCat + Apple / Google)

If you buy Sudoku Pro, the purchase is handled by the App Store or Google Play. We use RevenueCat to check whether the purchase is active so ads can be switched off and so you can restore it on a new device. RevenueCat receives an anonymous identifier and your purchase receipt, and keeps them for as long as the purchase exists so that a reinstall can find it again. It does not receive your name, email or payment details — the stores never share those with us either.

8. Reminders

The daily reminder is scheduled by your own device. There is no push server, we send no messages, and nothing about the reminder leaves the phone. Turn it off in Profile, or in your system notification settings.

9. What the app asks permission for

Notifications, for the daily reminder, and only if you switch it on. On iOS, Apple’s App Tracking Transparency question. That is the whole list: no camera, no microphone, no contacts, no photos, no files and no precise location.

10. Where the data goes

Google and RevenueCat are United States companies and process what they receive on servers in the United States and elsewhere. Where that data leaves the EEA or the UK it moves under the European Commission’s Standard Contractual Clauses, which both companies publish in their own terms. We hold nothing on a server of our own, in any country.

11. Why we are allowed to

For readers in the EEA and the UK: advertising and usage measurement run on your consent, asked for before either starts, with the ways to change that answer set out under Advertising above. Purchases run on the contract you entered into when you bought Sudoku Pro. Crash reports run on our legitimate interest in keeping the app working.

12. Your rights

In the EEA, the UK and other places with similar law you may ask for a copy of your personal data, ask for it to be corrected or deleted, object to it being processed, and withdraw a consent you gave. Because there is no account and no server of ours, most of that has a shorter route through the device: delete the app to erase everything it stored, reset or delete your advertising identifier in your device settings to break the link Google holds, and reinstall to be asked for consent again.

For anything you would like us to pass on to Google or RevenueCat, write to the address below and we will.

We do not sell personal information for money. Personalised advertising can count as “sharing” under California law, which is why the consent form is asked before any ad is requested, and why refusing it means no ad is requested at all.

13. Children

The app is suitable for all ages, contains no user-generated content and no messaging. It is not directed at children under 13 — under 16 in parts of the EEA — as its primary audience, and we do not knowingly collect anything from them. If you believe a child has been shown personalised ads through this app, write to us and we will have that data deleted.

14. Changes to this policy

The date at the top says when this policy last changed. A change that widens what is collected is asked about again rather than assumed.

15. Contact

If you have any questions about this Privacy Policy, please contact: