Mobile Brain Games Premium Privacy Policy
Privacy policy and terms of service for the Mobile Brain Games Premium app.
Last updated: June 26, 2026
Konstantinos Thelouras (also referred to as “we”, “us”, or “our”) built the Mobile Brain Games Premium app (the “Service”) as a commercial, freemium application for Android and iOS. This page explains the collection, use, and disclosure of personal information when you use the Service, and the terms that govern its use.
Privacy policy
1. Information we collect
| Source | What is collected | Where it is stored | Purpose |
|---|---|---|---|
| Local device storage (SharedPreferences) | User profile data (userId, joinDate, premiumStatus, streaks, total games, play time, per-game stats, high scores, and best reaction times); selected locale; demo-game-play tracking flags |
On the user’s device only | Persist app state, enable offline play, remember language preference |
| Firebase Anonymous Authentication | Anonymous UID generated by Firebase Auth | Firebase Auth (cloud) | Provide a stable identifier for syncing the local profile across devices |
Cloud Firestore (via SyncService) |
Full user profile and a history of game results (gameId, category, score, duration, metadata) |
users/{uid} collection and users/{uid}/history sub-collection |
Back up user progress, enable cross-device sync, and restore data after reinstallation |
| Firebase Analytics | Events such as app_open, screen_view, game_start, game_complete, paywall_view, purchase_attempt, purchase_success, purchase_failure, and ui_interaction; user properties including is_premium, total_games_played, current_streak, and best_streak |
Google’s analytics servers | Understand use of the Service, monitor app health, improve the experience, and measure conversion to the pro version |
| RevenueCat | Transaction identifier, receipt data, anonymous device identifier, and purchase status for the Mobile Brain Games Premium Pro entitlement | RevenueCat servers | Verify a one-time purchase and unlock pro features |
| Error and crash data (only when a crash occurs) | Stack traces, error messages, device model, OS version, app version, battery level, network type, locale, timestamp, and a synthetic device identifier | Sent to Firebase if Crashlytics is enabled in the future | Diagnose and fix technical issues |
What we do not collect
We do not collect personally identifiable information such as name, email address, phone number, or location. No advertising SDKs are included, and the app does not request camera, microphone, contacts, or health data.
2. How we use information
- Store game progress, sync it to the cloud, and restore it on new devices.
- Verify one-time purchase status through RevenueCat to enable pro features.
- Use aggregate analytics and performance information to guide feature development.
- Use optional crash logs to resolve bugs.
3. Third-party services
| Service | What it may collect | Privacy policy |
|---|---|---|
| Firebase (Google Analytics, Auth, Firestore) | Event data, anonymous UID, and stored documents | Firebase Data Privacy |
| RevenueCat | Purchase receipt, device identifier, and entitlement status | RevenueCat Privacy Policy |
| Google Play Billing | Transaction IDs and payment method, handled by Google | Google Play Privacy |
| Apple App Store | Transaction IDs and receipt data, handled by Apple | Apple Privacy Policy |
We do not share data with other parties except as required to process payments or operate these services.
4. One-time purchase and pro unlock
The Service uses a freemium model. Five games are free, while nine additional games become permanently available after a single lifetime purchase of Mobile Brain Games Premium Pro. RevenueCat manages this one-time entitlement: it records the transaction identifier and receipt, validates the purchase with the applicable store, and grants the entitlement. There is no recurring billing, auto-renewal, or future charge.
5. Permissions
| Platform | Permission | Reason |
|---|---|---|
| Android | android.permission.INTERNET |
Network communication for Firebase, RevenueCat, and sync |
| Android | android.permission.ACCESS_NETWORK_STATE |
Detect connectivity for online features |
| Android | com.android.vending.BILLING |
Google Play one-time purchase |
| iOS | No special permissions declared | The app does not request camera, microphone, location, or contacts |
6. Security
Data in transit uses HTTPS/TLS. Firebase and RevenueCat provide their own data-at-rest security measures. No internet transmission can be guaranteed completely secure.
7. Children’s privacy
The Service is not directed at children under 13, and we do not knowingly collect personal information from anyone in that age group. Contact us if you become aware that a child under 13 has provided personal data.
8. Changes to this privacy policy
We may update this policy from time to time. A revised version will be posted in the app and this page will show an updated “Last updated” date. Continued use after changes constitutes acceptance of the revised policy.
9. Contact information
For questions about this Privacy Policy, contact the developer through the email address in the app-store listing or the Mobile Brain Games contact email.
Terms of service
1. Acceptance
By downloading, installing, or using Mobile Brain Games Premium, you agree to these Terms of Service. If you do not agree, do not use the Service.
2. Account and authentication
The Service does not require a personal account. An anonymous Firebase UID is created automatically to sync progress across devices; it does not reveal personal identity.
3. License
We grant a non-exclusive, non-transferable, revocable limited license to install and use the Service on a compatible device solely for personal, non-commercial use, subject to these Terms.
4. One-time purchase and payment
- Free tier: Access to five core games and limited daily play.
- Pro tier: Access to nine additional games, unlimited replays, and advanced analytics after a single lifetime purchase.
- Pricing: Visible in the paywall and may change with prior notice in the store listing.
- Purchase flow: Managed by Google Play or Apple App Store through RevenueCat as a one-time entitlement.
- No recurring charges: Pro features remain unlocked after a completed purchase.
- Refunds: Managed exclusively by Google Play or Apple; the developer cannot issue refunds directly.
5. User conduct
You agree not to reverse-engineer, decompile, or disassemble the Service; use it to violate any law or third-party rights; submit false information or fraudulently obtain the pro entitlement; or interfere with its normal operation. A violation may result in immediate termination of access without refund.
6. Termination
We may suspend or terminate access at any time, with or without cause, including for violation of these Terms. Locally stored data remains on your device, but cloud-synced data will become inaccessible after termination.
7. Disclaimer of warranties
The Service is provided “as-is” and “as-available” without express or implied warranties, including merchantability, fitness for a particular purpose, non-infringement, accuracy, completeness, or reliability. We do not guarantee that it will be error-free, uninterrupted, or compatible with every device.
8. Limitation of liability
To the maximum extent permitted by applicable law, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for loss of data, revenue, or profits arising from use of the Service.
9. Governing law
These Terms are governed by the laws of Greece, without regard to conflict-of-law principles. Disputes will be resolved in the competent courts of Athens, Greece.
10. Changes to these terms
We may revise these Terms at any time. Revised Terms will be posted in the app and become effective upon posting. Continued use indicates acceptance.
11. Contact
For questions about these Terms, use the contact information in the app-store listing or hello@mobilebraingames.com.
By using Mobile Brain Games Premium, you acknowledge that you have read, understood, and agree to this Privacy Policy and these Terms of Service.