Last updated: 30 June 2026
The short version: Centz runs entirely on your device. There are no accounts and no personal information is collected. Microphone audio is analysed live on your phone and never recorded or sent anywhere. The only data gathered is anonymous usage analytics and crash reports, used solely to improve the app and fix bugs — never linked to your identity and never used to track you.
Centz does not ask you to create an account and does not gather personal data. I do not collect your name, email address, location or contacts, and I never ask you to identify yourself. The only information collected is anonymous analytics and crash data, described below. Everything else you do in the app — the instruments you pick, the tunings you set, the notes you play — stays on your device.
Centz needs the microphone to hear your instrument and measure its pitch. Audio from the microphone is analysed live, on your device, purely to detect the note you are playing and how far it is from being in tune. It is never recorded, never stored and never sent anywhere. The app only listens while a tuner screen is open, and iOS asks for your permission before the microphone is ever used.
I collect anonymous analytics about how the app is used — for example which features are opened and how the app is navigated. I use this only to understand how people use Centz so I can improve the experience. This data is not linked to your identity in any way and is never used to track you across apps, services or over time.
I collect anonymous crash reports so I can find and fix problems and keep the app stable. I use this only to reduce the number of crashes. Like the analytics above, crash data is not linked to your identity and is never used to track you.
Centz is suitable for all ages and does not knowingly collect any personal information from anyone, including children under 13. The analytics and crash data described above are anonymous and cannot be used to identify any individual.
If this policy ever changes, I will update this page and revise the date above. Because I don’t collect contact information, material changes will be reflected here rather than sent to you directly.
