No tracking
No analytics SDKs, no ad IDs, no behavioral profiling.
No ads
Zero advertising SDKs. Zero ad networks. Ever.
Account optional
Play fully offline — sign in only if you want cloud sync.
You’re in control
Delete your data anytime. One email — done in 30 days.
01 Introduction
This Privacy Policy explains how Brainplayx (“we,” “our,” or “us”) collects, uses, stores, and protects your information when you use our mobile and web application (“the App”). By using the App, you agree to the practices described in this policy.
If you do not agree with this policy, please do not use the App.
02 Overview: Our Privacy-First Approach
The App is designed to work fully offline without any account. You can play all puzzle games, track progress locally, and use all core features without ever creating an account or sharing any personal data with us.
03 Information We Collect
3.1 Data Stored Locally on Your Device (No Account Required)
When you use the App without signing in, the following data is stored only on your device using local storage (SharedPreferences). This data never leaves your device.
| Category | Data Stored |
|---|---|
| Game Progress | Highest unlocked level, completed level IDs per game |
| Lives / Energy | Current life count, life regeneration timestamp |
| Daily Challenges | Last completed date, current streak, best streak, total completed, best time |
| Game Statistics | Play counts, wins, best scores, total scores, playtime, win streaks per game |
| Achievements | Unlocked achievement IDs |
| Preferences | Theme (dark/light mode), selected language |
| Onboarding | Whether you have completed the onboarding flow |
We do not transmit this data anywhere. It stays on your device.
3.2 Data Collected When You Sign In (Optional — Google Sign-In)
If you choose to sign in using Google, we collect the following information from your Google account:
- Display Name — your Google account name
- Email Address — your Google account email
- Profile Photo URL — a link to your Google profile picture
- Firebase User ID (UID) — a unique identifier assigned by Firebase Authentication
We use this information to:
- Identify your account
- Sync your game progress to the cloud so you can restore it on other devices
- Display your name and photo on public leaderboards (only if your score qualifies)
3.3 Data Stored in the Cloud (Only for Signed-In Users)
When you are signed in, your data is stored in Google Firebase Firestore under your Firebase UID. The data stored mirrors the local data described in Section 3.1, plus:
- Display Name, Email, Photo URL (from your Google account)
- Last Login Timestamp
- Lives count and regeneration timestamp (for cross-device sync)
- Daily challenge progress
- Per-game statistics and progress
3.4 Public Leaderboard Data
If you are signed in and achieve a score on the weekly leaderboard, the following data becomes publicly visible to all users of the App:
- Your Display Name
- Your Profile Photo
- Your score or win count for the relevant game
Leaderboards reset every Monday (weekly). Historical leaderboard data from previous weeks is not retained after the reset.
If you do not want to appear on leaderboards, you can either:
- Play without signing in, or
- Avoid the leaderboard-enabled games while signed in (Tetris, 2048, Sudoku, Zip, CrossClimb, Pinpoint, Queens, Tango, Tic Tac Toe, Ludo, Chess)
3.5 Data We Do NOT Collect
We explicitly do not collect:
- Location data
- Camera or microphone data
- Contacts or address book
- Device identifiers (IDFA, GAID, etc.)
- IP addresses (beyond what Firebase/Google infrastructure logs internally)
- Behavioral analytics or usage event tracking
- Advertising identifiers
04 How We Use Your Information
We use the data we collect only for:
- Providing the App’s features — syncing progress, maintaining the lives system, and displaying leaderboards.
- Displaying your profile — your name and photo are shown in the App when you are signed in and on public leaderboards.
- Improving data consistency — when you sign in after playing offline, your local progress is merged with your cloud data (always taking the higher value so you never lose progress).
We do not use your data for:
- Advertising or marketing
- Selling to third parties
- Profiling or behavioral targeting
- Any purpose other than operating the App
05 Third-Party Services
The App uses the following third-party services. Each has its own privacy policy.
| Service | Purpose | Privacy Policy |
|---|---|---|
| Firebase Authentication (Google) | Google Sign-In | firebase.google.com |
| Cloud Firestore (Google) | Cloud data storage | firebase.google.com |
| Google Sign-In | OAuth authentication | policies.google.com |
| Google Fonts | Custom font loading | developers.google.com |
Data stored in Firebase is hosted on Google Cloud infrastructure. Google’s data processing agreements and security standards apply. For more information, see Firebase Privacy and Security.
06 Data Retention
| Data Type | Retention |
|---|---|
| Local device data (no account) | Until you uninstall the App or clear app data |
| Cloud account data (signed-in) | Until you request deletion (see Section 8) |
| Weekly leaderboard entries | Deleted every Monday on leaderboard reset |
We do not retain leaderboard history after weekly resets.
07 Data Security
We take reasonable steps to protect your data:
- All communication with Firebase uses HTTPS/TLS encryption in transit.
- Firebase Firestore rules restrict access so only your own UID can read or write your personal data (leaderboard scores are publicly readable by design).
- We do not store passwords — authentication is handled entirely by Google OAuth.
- We do not have access to your Google account credentials.
No system is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.
08 Your Rights and Choices
Regardless of where you live, you have the following rights:
8.1 Access
You can view all data stored about you by reviewing your in-app profile and game statistics.
8.2 Deletion
To delete your account and all associated cloud data:
- Sign out of the App, then contact us at ljake4831@gmail.com with the subject line “Account Deletion Request” and include the email address linked to your Google account.
- We will delete your Firestore data (all records under your UID) within 30 days.
Uninstalling the App removes all local data immediately.
8.3 Data Portability
To request a copy of your cloud data, contact us at ljake4831@gmail.com.
8.4 Opt Out of Cloud Sync
Simply do not sign in. The App is fully functional without an account.
8.5 Remove Yourself from Leaderboards
Sign out of the App. Your leaderboard entries will be removed at the next weekly reset (every Monday). For immediate removal, contact us at ljake4831@gmail.com.
09 Children’s Privacy (COPPA)
The App is a puzzle game that may appeal to users of all ages. We do not knowingly collect personal information from children under the age of 13 (or the applicable age of digital consent in your region).
- Without signing in: No personal data is collected from any user, including children.
- Google Sign-In: Google’s terms of service require users to meet minimum age requirements to create a Google account. By signing in with Google, you represent that you meet those requirements.
If you are a parent or guardian and believe your child has signed in and provided personal data without your consent, please contact us at ljake4831@gmail.com and we will delete the account data promptly.
10 Users in the European Economic Area (GDPR)
If you are located in the EEA, UK, or Switzerland, the following applies:
Legal Basis for Processing
- Consent — you consent to cloud sync by choosing to sign in.
- Legitimate Interests — providing and improving the App’s core functionality.
Your GDPR Rights
- Right to access your personal data
- Right to rectification (correct inaccurate data)
- Right to erasure (“right to be forgotten”)
- Right to restrict processing
- Right to data portability
- Right to object to processing
- Right to withdraw consent at any time (by signing out)
To exercise any of these rights, contact us at ljake4831@gmail.com.
You also have the right to lodge a complaint with your local data protection authority.
11 Users in California (CCPA / CPRA)
If you are a California resident:
- We do not sell your personal information.
- We do not share your personal information for cross-context behavioral advertising.
- You have the right to know what personal information we collect, use, and disclose.
- You have the right to request deletion of your personal information.
- You have the right to non-discrimination for exercising your privacy rights.
To exercise these rights, contact us at ljake4831@gmail.com.
12 Changes to This Privacy Policy
We may update this Privacy Policy from time to time. When we do:
- We will update the “Last Updated” date at the top of this document.
- Significant changes will be communicated through an in-app notice.
Continued use of the App after changes take effect constitutes your acceptance of the revised policy.
13 Contact Us
If you have any questions, concerns, or requests regarding this Privacy Policy or your personal data, please contact us:
We aim to respond to all privacy-related inquiries within 14 business days.
This Privacy Policy was written based on the actual data practices of the App as implemented. If publishing to the Google Play Store or Apple App Store, you will also need to complete their respective privacy questionnaires/nutrition labels using the information in this document.