Privacy Policy — Android Doctor

Last updated: April 22, 2026

Summary

Android Doctor runs all diagnostics locally on your device. The app uses Google Firebase (Analytics and Crashlytics) to understand aggregate usage patterns and catch crashes. No personal data, no ads, no device contents are transmitted.

Data Collection

Via Firebase Analytics (aggregate, anonymized):

• Screen views and feature usage counts
• Device model, OS version, app version, country
• Install source (Play Store listing, referrer)
• Firebase-generated app instance ID (resettable in Android settings)

Via Firebase Crashlytics (only when app crashes):

• Stack trace, device model, OS version, app version
• Logs you explicitly add to Crashlytics (none by default)

We do not collect:

• Personal information (name, email, phone)
• Diagnostic results, benchmark data, or scan output
• Installed package names or bloatware detection results
• Advertising identifiers
• Contacts, photos, location, or device contents

On-Device Processing

All diagnostics (battery health, storage health, RAM usage, CPU analysis, bloatware scanning) are performed entirely on your device. Diagnostic results, benchmark history, and fix snapshots are stored locally on your device and are never transmitted anywhere.

Permissions

Android Doctor may request the following permissions:

• QUERY_ALL_PACKAGES — required to scan installed system packages for bloatware detection. Package names are analyzed locally and never transmitted.

If you choose to use Shizuku for enhanced functionality, Android Doctor uses the Shizuku API to execute shell commands with elevated permissions. These commands run locally on your device. No data leaves your device.

Third-Party Services

Android Doctor uses Google Firebase (Analytics + Crashlytics). Firebase data handling is governed by Google's privacy policy: firebase.google.com/support/privacy. No other third-party SDKs or advertising networks are integrated.

You can opt out of Analytics by disabling "Ads personalization" and resetting your Advertising ID in Android settings.

Data Storage

The following data is stored locally on your device:

• Benchmark history (app launch times, system metrics) — stored in a local SQLite database
• Fix rollback snapshots — stored as JSON files in the app's private storage

This data is only accessible to the Android Doctor app and is deleted when you uninstall the app or clear its data.

Children's Privacy

Android Doctor is not targeted at children under 13. Firebase Analytics collects aggregate, anonymized usage data only.

Changes to This Policy

If this policy changes, the updated version will be posted at this URL. The app does not collect data, so there is no practical impact from policy changes.

Contact

For questions about this privacy policy, open an issue at: github.com/knowamit/android-doctor-app/issues