# Privacy Policy — Math Rhythm Combat
_Last updated: 2026
This privacy policy describes how the **Math Rhythm Combat** Android application ("the app") handles user information.
## Information we collect
The app does **NOT** collect, store, or transmit any personal information from the user. Specifically, the app does not collect:
- Names, email addresses, or phone numbers
- Device identifiers (IMEI, MAC address, Android ID, advertising ID)
- Location information
- Contacts, photos, or files
- Browsing or usage analytics
- Crash reports
## Local storage
The app saves the following information on your device only, in a local JSON file (`save.json`) within the app's private storage directory:
- Your in-game points balance
- Your high score
- Your audio preferences (music on/off, sfx on/off, volume)
- The highest difficulty you have unlocked
This data never leaves your device and is removed when you uninstall the app.
## In-app purchases
The app uses Google Play Billing for in-app purchases. When you make a purchase, Google Play handles the transaction, payment, and refunds according to Google's privacy policy. We do not receive your payment information. We receive only a confirmation that the purchase succeeded so the app can grant the corresponding points.
## Network usage
The app connects to the internet only to communicate with Google Play Billing for purchase processing and price information. No other network calls are made.
## Third-party services
The app uses the following third-party services:
- **Google Play Billing** — for in-app purchases. See Google's privacy policy at https://policies.google.com/privacy
- **Unity Engine** runtime — does not collect any data because Unity Analytics, Unity Ads, and similar SDKs are not included in this build.
## Children
The app does not knowingly collect any data from anyone, including children. The game is rated for all ages.
## Changes
If this policy changes, we will update the date above and post a new version in the same location.
## Contact
For questions about this policy, contact: kaitlynpterrie@gmail.com