Stickers Master

Privacy Policy  ·  Politika privatnosti

Last updated: 21 May 2026

This Privacy Policy explains how the Stickers Master mobile application ("the app") collects, uses, and protects your information. By using the app you agree to the practices described here.

1. Who is responsible for your data

The app is developed and operated by Ljubomir Maksimović ("we", "us"), an individual developer, acting as the data controller. For any privacy question or request, contact us at stickers.master26@gmail.com.

2. What the app does

Stickers Master helps collectors track their sticker album progress, find other collectors in their city to swap duplicates with, and message each other once both sides agree. Some features work without an account; swapping and messaging require signing in.

3. Information we collect

Account information

Collection data

Profile and swap information (optional)

Messages and safety data

Technical data

Device permissions

The app contains no advertising, no analytics SDKs, and no third-party trackers. We do not collect your location, contacts, or browsing activity.

4. How we use your information

5. What other users can see

If you take part in the swap area, your display name, city, country, and profile photo are visible to other signed-in users. When you send a chat request or message, the recipient can see your name, photo, and the content you send. Your email address is never shown to other users.

6. Legal bases for processing

Where data-protection law (including the EU/EEA General Data Protection Regulation and equivalent laws in the region) applies, we rely on: performance of our service to you (providing the app's features); your consent (for optional features such as the swap profile and notifications); and our legitimate interest in keeping the service safe and functional.

7. Sharing and third parties

We do not sell your personal data and do not share it for advertising. The app's backend runs on Google Firebase (Authentication, Cloud Firestore, Cloud Messaging, and Cloud Functions), provided by Google. Google acts as our processor and stores the data on our behalf. Signing in uses Google Sign-In. Google's handling of data is governed by Google's own privacy policy at policies.google.com/privacy. We may also disclose information if required by law.

8. Where your data is stored

Account, collection, profile, and message data is stored using Google Firebase in a data centre located in the European Union (Frankfurt, Germany).

9. Data retention

We keep your data for as long as your account exists. If you delete your account, your data is removed as described in the next section. Abuse reports may be retained as long as needed to keep the service safe.

10. Your rights and choices

Depending on your location, you have the right to access, correct, export, or delete your personal data, to object to or restrict certain processing, and to withdraw consent. You can:

You also have the right to lodge a complaint with your local data protection authority.

11. Children's privacy

The app is not directed to children under 13, and we do not knowingly collect personal information from them. Where local law sets a higher age of digital consent, that age applies. A child who uses the app should do so only with the involvement of a parent or guardian, and should not sign in with a personal account or share personal details. If you believe a child has provided us with personal information, contact us and we will delete it.

12. Security

Data is transmitted over encrypted connections and access is restricted by security rules so that each user can reach only their own data. No method of transmission or storage is completely secure, but we take reasonable measures to protect your information.

13. Changes to this policy

We may update this policy from time to time. The "last updated" date at the top will change, and significant changes will be communicated within the app where appropriate.

14. Contact

Questions about this policy or your data: stickers.master26@gmail.com.