Learn every note on the guitar neck — 10 notes at a time.
Available for iPhone and Android
Questions, bug reports, or feature ideas? Email mccarthypauljustin@gmail.com and you'll get a reply from the developer.
Effective 26 July 2026
Fretboard King is a guitar practice app. Here is everything it does with data:
The app has no sign-up and never asks for your name, email, or any other personal details. Your practice scores exist only on your device while the app is open and are discarded when it closes.
To understand how the app is used and improve it, the app sends anonymous usage events to Amplitude, an analytics service. These events cover things like: a practice session started or finished, its score, and which settings are in use. Along with events, Amplitude receives standard device information (such as device model, operating system version, language, and a randomly generated device identifier). This data is not linked to your identity — we don't know who you are — and it is not used for advertising or shared with anyone else. The app does not access the advertising identifier (IDFA/AAID) and does not track you across other apps or websites.
The app works fully offline. Analytics events are only sent when a connection is available; nothing about practice requires the internet.
The app requests no device permissions — no camera, microphone, location, contacts, or photo access.
The app collects no personal information from anyone, including children. Analytics data is anonymous for all users.
If you would like analytics data associated with your device's random identifier deleted, contact us at the address above and we will request deletion from Amplitude.
If a future version of the app changes any of the above (for example, if optional ads are ever added), this policy will be updated before that version is released, and the change will be noted here.
© 2026 Paul McCarthy · Fretboard King