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Privacy Policy

Last updated: September 24, 2026

Introduction

Welcome to Tenkai Launcher. Your privacy is of paramount importance to us. Tenkai Launcher is designed from the ground up to be a local-first application. This means we respect your personal space, and we do not collect, monitor, or store your personal information, configurations, or usage history on any remote servers.

No Server-Side Telemetry or Tracking

We do not run any backend servers for tracking, telemetry, user analytics, or usage statistics.

  • Local Storage: All of your launcher preferences, layouts, custom gestures, theme colors, and configuration settings are stored locally on your Android device.
  • App Data Access: Standard Android permissions requested by the launcher (such as reading the list of installed applications or setting the system wallpaper) are used exclusively to render your home screen and app drawer. None of this data is transmitted off your device.

Local-First Guarantee: We do not collect, sell, lease, or share your application usage data, screen layouts, or list of installed apps with any third parties. The only diagnostic data that leaves your device is anonymous crash reporting, described below.

Android Permissions & System Services

To provide core home screen functionality, launcher widgets, and optional user-triggered gestures, Tenkai Launcher requests specific Android permissions and system service capabilities. Consistent with our local-first philosophy, all data processed by these permissions stays strictly on your device.

Accessibility Service API (android.permission.BIND_ACCESSIBILITY_SERVICE)

Tenkai Launcher includes an optional Accessibility Service (TenkaiAccessibilityService). When explicitly enabled by the user in Android settings, this service is used solely to perform system actions requested by your custom gestures and pie shortcuts, specifically:

  • Screen Lock: Invoking the system global lock action (GLOBAL_ACTION_LOCK_SCREEN on Android 9+) when you use a lock shortcut or double-tap gesture. This allows your device to lock instantly without requiring Device Administration and without disabling biometric (fingerprint or face) unlock.
  • Power Dialog: Opening the system power and restart dialog (GLOBAL_ACTION_POWER_DIALOG) directly from a launcher gesture or shortcut.

Accessibility Privacy Commitment: Tenkai Launcher does not use the AccessibilityService API to monitor user input, read keystrokes, observe text, inspect on-screen content, or collect, store, or transmit any personal or sensitive user data. The service configuration explicitly declares android:canRetrieveWindowContent="false" and does not listen to or process accessibility events.

Notification Access (BIND_NOTIFICATION_LISTENER_SERVICE)

When granted by the user, notification listener access is used strictly on-device to display unread notification badges on application icons, notification preview capsules on your home screen, and media playback controls. Notification content, sender details, and notification metadata are processed ephemerally in device memory and are never saved to remote servers, logged, or shared with third parties.

Installed Applications (QUERY_ALL_PACKAGES)

As a home screen launcher (android.intent.category.HOME), Tenkai Launcher requires access to query installed applications to populate your app drawer, execute real-time search, apply custom icon packs, manage hidden apps, and launch applications. Your list of installed applications remains strictly on your device and is never tracked, profiled, or shared.

Location Access (ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION)

Location access is entirely optional. When enabled, it is used strictly on-device to provide local weather forecasts on your home screen and to identify the connected Wi-Fi network name (SSID) for contextual automation tokens (which Android requires location permission to read). Your location is never tracked in the background, stored on external servers, or shared.

Bluetooth Access (BLUETOOTH_CONNECT)

Optional Bluetooth permissions are used exclusively to recognize connected Bluetooth audio devices or car systems to trigger user-configured launcher automation tokens and spaces. Bluetooth device metadata is never stored off-device or shared.

Device Administration (Optional Fallback)

For older Android versions that do not support Accessibility-based screen locking, Tenkai Launcher offers an optional Device Administration receiver (TenkaiDeviceAdminReceiver). It is used solely to invoke the system lockNow() command upon user request and performs no other administrative functions.

Crash Reporting

To keep Tenkai Launcher stable and fix bugs quickly, the app uses Firebase Crashlytics, a crash reporting service provided by Google. When the app crashes or encounters a serious error, Crashlytics automatically sends us a diagnostic report so we can identify and resolve the problem.

These reports do not include your launcher configurations, screen layouts, or list of installed apps. A crash report typically contains:

  • The type of crash or error and a stack trace showing where it occurred in the code.
  • Anonymous device state at the time of the crash (such as device model, operating system version, available memory, and app version).
  • A randomly generated installation identifier used to group crashes from the same device. This is not tied to your name, email, or Google account.

This data is processed by Google on our behalf and is used solely to improve the stability of the app. For more information, see Firebase's Privacy and Security documentation.

Third-Party Services

While Tenkai Launcher itself collects no data, it integrates with Google Play Services to provide standard store functions, licensing verification, and secure payment processing.

Specifically, when you purchase premium features within the app:

  • Payments are processed securely via the Google Play Billing Library.
  • We do not receive or store any credit card numbers, bank details, or personal billing addresses. All transaction processing is handled securely by Google.
  • Google Play Services may collect certain metadata (such as device identifiers, payment status, and IP addresses) to verify purchases and comply with legal requirements. You can review their policies here: Google Privacy & Terms.

Device Security

Because your configurations and preferences are stored entirely on your device, the security of your launcher data depends on the security of your physical device. We recommend securing your phone with a strong PIN, password, pattern, or biometric lock to prevent unauthorized access.

Future Policy Updates

As Tenkai Launcher grows, we may introduce new features that require online sync or cloud backups. If we decide to introduce additional server-side components or expand the data we collect in the future, we will:

  • Update this Privacy Policy page to clearly detail what data is collected, why it is collected, and where it is stored.
  • Notify users of these changes directly in the application (for example, through an app update notification or a prompt highlighting the changes).
  • Always seek explicit consent (opt-in) for any features that transmit personal or usage telemetry off your device.

Contact Us

If you have any questions or feedback regarding this Privacy Policy or Tenkai Launcher's privacy practices, please contact us via email at:

Email: legal@tenkailauncher.com