Privacy Policy

Russian Checkers by Sudarev (Шашки by Sudarev) · Developer and operator: Sudarev Daniil · Last updated: October 23, 2026

Russian Checkers ("the app") can be played without an account, and then no personal data is collected. If you choose to sign in, we keep the minimum data described below, only to run that feature. We never sell or share your data.

1. No account

The app works without sign-up. We do not ask for your name, email or phone number.

2. Optional account

You can sign in with Google (on iPhone also with Apple) — only if you want to. Then our server (Supabase, protected by access rules) stores: your email address and sign-in ID, a nickname (by default made from your name, you can change it), your country code taken from the phone's language settings (not from location), a friend code and your score against the bot (wins and losses for each level). This is used only to keep your score when you move to another phone.

This data is not used for advertising or tracking and is not shared with third parties. You can delete the account and all this data in the app: "Account" → "Delete account". Deletion is immediate and permanent.

How to delete your account without the app: email [email protected] from the address you signed in with, subject "Delete account". We delete the account, nickname and score within 7 days and confirm by email. Nothing is kept.

3. Data on your device

Your settings (theme, bot level) and your win/loss score are stored only on your phone. They are not sent to us unless you sign in. Deleting the app deletes this data.

4. No ads or tracking

The app is free and works offline. It has no advertising and no trackers, and does not use the advertising ID. The internet is used for the optional account and for the services listed in section 7.

5. Permissions

The camera, microphone, photos, contacts and location are not used. Vibration is used only as move feedback.

6. Children

Without an account the app collects no data from anyone. Accounts are intended for users aged 13 and over.

7. Services we use

Error reports. If the game crashes or freezes, it sends a technical report through the Sentry service: game version, device model, system version and where in the code the error happened. Reports do not include your name, email, nickname or save data and are not used for advertising. You can turn this off in the game settings: “Send error reports” (or “Error reports”).

Anonymous statistics. The app can count launches with Plausible, a privacy-friendly analytics service that uses no cookies or advertising identifiers and does not store IP addresses. Nothing in these statistics identifies you.

None of these services uses your data for advertising or sells it.

8. Changes and contact

If this policy changes, the new version will be published on this page. Contact: [email protected].