Last updated: October 4, 2026
Stamp ID ("the app") identifies postage stamps from photos. This policy explains what happens to your data.
The app asks for your permission before the first photo is sent, and you can withdraw it at any time in the app's Settings. When you tap Identify, the stamp photos you took or chose are sent over an encrypted connection to our server (hosted by Supabase), which passes them to Replicate, Inc., a third-party AI service that runs the AI models (Google Gemini, with Anthropic Claude as a backup). The photos are used only to answer that request. We do not keep them, sell them or use them for advertising, and we do not use them to train models.
Identified stamps, their photos and values are saved only on your device. Deleting a stamp or the app removes them.
The app asks for camera access only so you can photograph a stamp. When you choose a photo instead, you pick it in Apple's photo picker; the app does not read the rest of your library.
Scanning requires a subscription. Purchases are handled by Apple, and we use RevenueCat to check whether you have an active subscription. RevenueCat receives an anonymous app user ID and your purchase history from Apple; see RevenueCat's privacy policy. To enforce a fair-use limit, our server stores the same anonymous ID with the number of scans per day.
The app sends a few anonymous usage events to our own server (for example which onboarding step was viewed, whether the subscription screen was shown, and whether a purchase succeeded), together with the anonymous app user ID, the app version and the device language. We use them only to improve the app. They contain no photos, names, email addresses or device identifiers, and they are not shared with third parties.
The app has no advertising and no third-party analytics SDKs, and it does not track you across apps or websites.
The app is not directed at children under 13 and does not knowingly collect their personal information.
Questions or deletion requests: support@berkcan.dev