Privacy Policy

Welcome to Tembo Chess

Welcome to Tembo Chess ("the App"), developed by Tembo Chess / Tembo inc ("we", "our", or "us"). Your privacy is important, and this Privacy Policy explains how we collect, use, store, and protect your information. By using Tembo Chess, you agree to the practices described here.

1. Information We Collect

We only collect the minimum data necessary for the App to function.

1.1 Account Information (Optional)

If you choose to sign in using Firebase Authentication, we may collect:

• Email address

This is used ONLY for:

• Saving your training progress
• Ranking you on leaderboards
• Preventing duplicate accounts

1.2 Usage Data

We may collect anonymous usage data such as:

• Puzzle completion statistics
• App performance metrics
• Device type
• General analytics (non-identifiable)

1.3 Local Storage (On Your Device Only)

Tembo Chess stores the following locally on your device, NOT on our servers:

• Downloaded puzzle packs
• User puzzle progress
• Settings and preferences

We do not collect or upload this data.

2. Advertising & Third-Party Services

2.1 Firebase Services

We use Google Firebase for essential app functionality:

• Firebase Authentication - Secure user login
• Firebase Firestore - Data storage
• Firebase Analytics - App performance insights
• Firebase Crashlytics - Error reporting

3. How We Use Your Information

We use collected information for:

• Account login & syncing progress
• Improving app performance
• Maintaining leaderboards
• Displaying relevant advertisements
• Ensuring fair use
• Enhancing features based on aggregated analytics

4. Legal Basis for Processing (GDPR)

We process your data based on:

• Consent (when signing in and for personalized ads)
• Legitimate interest (app analytics and performance)
• Contract (providing app functionality)

You may withdraw consent any time by deleting your account, adjusting ad preferences, or contacting us.

5. Data Sharing

We do not sell or rent your personal information. Your data may be shared only with:

5.1 Google Services

Used for:

• Authentication (Firebase Auth)
• Analytics (Firebase Analytics)
• Crash reports (Firebase Crashlytics)
• Advertising (Google AdMob)

Google services follow strict security standards and data protection requirements.

5.2 Legal Requirements

We may disclose data if required:

• By law or legal process
• To protect user safety
• To enforce our Terms of Service
• To prevent fraud or abuse

6. Data Storage & Security

We apply industry-standard security practices:

• Encrypted communication (HTTPS)
• Secure Firebase identity handling
• No storage of passwords (Firebase manages this)
• Regular security updates

Local puzzle packs remain only on your device unless you manually delete them.

7. Children's Privacy

8. Your Rights

Depending on your region, you have the right to:

• Request access to your data
• Request deletion of your data
• Correct inaccurate data
• Withdraw consent for data processing
• Opt-out of personalized advertising
• Request account deletion

9. Data Retention

We retain:

• Account data only while your account is active
• Analytics data in aggregated form
• Advertising data as required by Google AdMob policies
• Crash logs temporarily for debugging

You can delete your data by:

• Removing your account via app settings
• Contacting us directly
• Clearing app storage from device settings

10. Third-Party Services

Tembo Chess uses these Google services:

• Firebase Authentication
• Firebase Analytics
• Firebase Crashlytics
• Google AdMob

Links to their privacy terms:

Firebase Privacy & Security

Google Privacy Policy

Google AdMob

11. Changes to This Policy

We may update this Privacy Policy occasionally. Updates will be posted publicly with a new "Last Updated" date. Continued use of Tembo Chess after changes constitutes acceptance.

12. Contact Us