Privacy policy
LAST UPDATED: 15 NOVEMBER 2026
This policy explains what the Android app Sudoku Town and the website vilnius-riga.app ("Sudoku Town", "we", "us") collect, how we use it and the choices you have.
1. Signing in
You sign in to the app with your Google account through Google Play Games. We receive and store your Google Play Games player ID and display name. We do not receive your password, contacts, location or files.
2. What the app stores
- Profile: your display name (you can change it).
- Game progress: solved puzzles, solving times, palladium, titles, achievements and your settings such as themes and fonts.
- Social features: your friends list and friend requests, challenges, congratulations on achievements, and short messages you send to friends.
- Purchases: if you upgrade to Pro or buy palladium packs, the Google Play order number and purchase token, so your purchases work on any phone.
- Session: a random token that keeps you signed in, stored on our server and on your device.
3. Who can see what
Other players can see your display name, palladium, title, rank and achievements, for example on the leaderboard or your profile. Messages are visible only to you and the friend you write to. Your player ID is never shown.
4. The website
vilnius-riga.app uses no cookies, no advertising and no third-party analytics. To count visits, we store the page visited, the referring site and the time, together with a one-way hash of your IP address, so we can count unique visitors without storing the address itself. If your browser sends "Do Not Track", no visit is recorded. If you use the contact form, we store what you write and your email address to answer you.
5. Payments
Payments are processed entirely by Google Play. We never receive or store your card or billing details.
6. How we use data
- To run the app: sign-in, saving progress, leaderboards, friends and messages.
- To check purchases and unlock what you bought.
- To answer your messages and requests.
- To keep the service secure, for example rate limiting against abuse.
We do not sell or rent your data to anyone.
7. Service providers
- Google (Google Play Games, Google Play): sign-in, app distribution and payments, under the Google Privacy Policy.
- Our hosting and database providers: store the data described above on our behalf.
- Netlify: hosts this website.
8. Security
All traffic between the app, the website and our server is encrypted with HTTPS. Access to the database is restricted to the developer.
9. Keeping and deleting data
We keep your data while your account exists. You can delete your account at any time. See Delete your account. Purchase records are kept only as long as tax and accounting law requires. Website visit records are kept for up to 12 months.
10. Your rights
Depending on where you live (for example in the EU under the GDPR), you may have the right to access, correct, delete or export your data, and to object to or restrict its processing. Email us to use these rights. You can also complain to your local data protection authority.
11. Children
Sudoku Town is not directed at children under 13, and we do not knowingly collect their data. If you believe a child has given us data, contact us and we will delete it.
12. Changes
We may update this policy. The new version will appear on this page with a new date.