Privacy
Privacy Policy
Learn how microphone permission, local recordings, system backups, and data are handled.
iPhone App
The core metronome works without an account or network connection and provides a clear, low-distraction beat for everyday training. Available for iPhone only and requires iOS 17 or later.
Supports Chinese, English, Japanese, Korean, German, French and Russian. Change the language in Settings → Language or follow your system language.
Privacy
Learn how microphone permission, local recordings, system backups, and data are handled.
Support
Get help with sound, recording, background playback, and other common questions.
Contact
Email knbot@icloud.com. Please include your device model, iOS version, app version, and a description of the issue.