Privacy Policy

Short version: your microphone audio and coin library never leave your device. We use Google Analytics only to measure aggregate traffic and make the product better — never to identify, profile, or track individual people.

Coin Pinger uses your device's microphone to listen to a coin's ring while you tap it. The audio is analyzed live, in your browser, to measure resonance frequencies and decay. It is never recorded, saved, uploaded, or transmitted anywhere, and it is discarded moment to moment as it is processed. The microphone is only active while you are on a listening screen and have granted permission; your browser controls that permission and you can revoke it at any time.

The only data the app saves is your reference coin library (the names, frequencies, weights, and dimensions you calibrate or import). This is stored in your browser's local storage on your device only. It is never sent anywhere. Clearing your browser data, or deleting references in the app, removes it. Share links and exported files are created only when you explicitly tap Share or Export, and they contain only the reference data you chose to share.

Coin Pinger uses Google Analytics 4 across the app and website to measure aggregate traffic — such as page and screen views, approximate region, device and browser type, and referring links — so we can understand how the product is used and improve it. This is used purely for traffic analysis to better the product; it is never used to identify, profile, or track individual people, and it never includes your microphone audio or your reference coin library, which are processed entirely on your device. Google sets analytics cookies and processes this data on our behalf; see Google's Privacy Policy. You can opt out with Google's opt-out add-on or your browser's privacy controls.

No accounts. No advertising. No sale of data. No personal information, precise location, or contacts. Aside from the aggregate traffic analytics described above, no third-party services receive any data — and your microphone audio and coin library are processed entirely on your device.

The app is a general-audience utility and collects no data from anyone, including children. If this policy changes, the effective date above will be updated and the revised policy posted at this page.

Questions about this policy: contact@coinpinger.com.