Privacy

temperat.io processes all audio locally in your browser using the Web Audio API. Your microphone data is never transmitted to any server. There is no backend, no database, and no analytics.

The site does not use cookies, does not set tracking pixels, and does not include any third-party scripts. Your tuner settings (reference pitch, temperament, theme) are stored in your browser's localStorage and never leave your device.

If you choose to donate, payments are handled by Stripe on their domain. Stripe sets its own cookies and follows its own privacy policy when you visit their checkout. temperat.io has no first-party backend that processes payments, and we receive no data from Stripe — donations are handled entirely on Stripe's domain. We never see card details, contact information, or payment confirmations.

temperat.io is open-source. You can inspect the code yourself on GitHub.