Privacy Policy for Free Tuner
Last updated: 9 June 2026
1. Introduction
Free Tuner describes its information handling practices for iOS users. The app is free, contains no ads, no analytics or behavioral tracking, and no account sign-up. It is offered by an independent developer at hello@rhythmchallenge.app, with the website https://rhythmchallenge.app.
2. Data we do not collect
We do not collect personally identifiable information. There is no account sign-up; we do not collect your name, email, phone number, location, or payment data. The app contains no advertising and no analytics or behavioral tracking.
3. Data stored only on your device
The following remains locally on your device:
  • Settings and preferences (reference pitch A4, theme, language)
  • Microphone: the app uses the microphone only on your device to detect the pitch of the sound you play in real time. No audio is recorded or transmitted.
4. Data sent to third-party services
To keep the app stable, the app uses two Google Firebase services, and nothing more:
  • Firebase Crashlytics — if the app crashes, anonymous technical data (device model, OS version, and the crash details) is sent so we can fix bugs. It is not linked to your identity.
  • Firebase Cloud Messaging — if you allow notifications, a device token is used only to deliver notifications. It does not identify you personally.
We do not use analytics, we do not show ads, we do not track you across apps or websites, and we do not sell your data.
5. Your choices
You can disable microphone access and notifications at any time in your device settings. Crash and notification data sent to Google follows their policies.
6. Children and age
The app is rated 4+ and does not target children. We do not knowingly collect personal data from anyone.
7. International use
Google Firebase may process the limited crash and notification data globally, including in the United States.
8. Changes to this policy
Updates will be reflected with date changes at the top.
9. Contact
Privacy questions: hello@rhythmchallenge.app