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Privacy Policy

Effective Date: April 29, 2026  ·  Last Updated: August 4, 2026

Trei ("we", "us", "the developer") built AlertBox: UPI Voice Alert as an Android application that reads payment notifications aloud using text-to-speech, designed for accessibility and for shopkeepers. This privacy policy explains how the app handles your data.

The short version: AlertBox uses the Android Notification Listener service to detect payment notifications from your banking, UPI, and default messaging apps, then reads the amount aloud locally on your device. Notification content, parsed amounts, sender details, messages, and transaction history never leave your device. To enforce the Free daily voice allowance across reinstalls, AlertBox sends only hashed quota identifiers and count metadata. The app also uses ad and subscription SDKs (see below), which collect device-level data under their own policies.

Data Collection by the App Itself

AlertBox does not transmit notification content, amount, sender, message, or transaction history to any server we operate. It sends one-way hashed event/device identifiers, an optional signed-in Firebase user identifier, and daily quota count metadata solely to prevent duplicate counting and reset abuse.

  • No account is required; users who sign in use their Firebase identifier for cross-device quota continuity.
  • Notification parsing is performed entirely on-device.
  • Transaction history (if enabled) is stored locally only.
  • Daily quota records expire automatically; identifier links are retained only to preserve quota continuity across app-data clearing and sign-in changes.

Data Stored on Your Device

  • Parsed transaction history - amount, sender, and timestamp extracted from matching payment notifications.
  • Per-sender rules and preferences - TTS voice, muted senders, volume overrides.
  • App settings - theme, language, notification preferences.

All local data is deleted when you uninstall the app.

Permissions and Why We Need Them

Notification Access Disclosure (BIND_NOTIFICATION_LISTENER_SERVICE) AlertBox reads notifications from banking apps, UPI apps (GPay, PhonePe, Paytm, BHIM, etc.), and your default messaging app solely to detect and announce payment-related transactions. Notification text is filtered against a list of known payment-sender headers (HDFC, SBI, ICICI, etc.) and parsed locally on the device. Notifications that do not match payment senders, OTP / verification messages, and personal messages are ignored and never processed. The app does not transmit, upload, or share notification content with any server. You can revoke Notification Access at any time from Android system settings (Settings → Notifications → Special access → Notification access); the app will continue to work for other features but will no longer read payment alerts.
  • BIND_NOTIFICATION_LISTENER_SERVICE - Read notifications from banking, UPI, and default messaging apps to detect payment alerts. See disclosure above.
  • RECEIVE_SMS - Direct incoming bank-SMS capture when Android or the device maker redacts payment notification text. Matching messages are parsed locally; AlertBox does not read stored SMS or transmit SMS content.
  • POST_NOTIFICATIONS - Show in-app status notifications.
  • INTERNET / ACCESS_NETWORK_STATE - Serve ads, verify subscription status, and synchronize privacy-safe daily voice quota metadata.
  • VIBRATE - Optional haptic feedback on alert.

AlertBox declares RECEIVE_SMS only for the direct incoming bank-SMS fallback described above. It does not request, declare, or use READ_SMS, SEND_SMS, call-log, location, contacts, microphone, or camera permissions.

Third-Party Services

AlertBox integrates the following third-party SDKs, each subject to their own privacy policies:

Children's Privacy

AlertBox is not directed at children under 13. We do not knowingly collect data from children.

Data Security

All local data is protected by Android's app sandboxing. No notification content is transmitted off-device by AlertBox.

Changes to This Policy

We may update this policy when new features are added. Any changes will be posted here with an updated "Last Updated" date.

Contact

Trei
Email: contact@trei.dev
Phone: +91 85500 77767
Website: trei.dev  ·  Contact form