Support

We answer within two business days.

Common questions

• The tuner does not hear my guitar. Check that CordOS has microphone permission in your phone's settings and that no other app is using the microphone. Play one string at a time, close to the phone.
• How accurate is the tuner? It reads to a tenth of a cent and tells you when you are in range. The band in the centre of the meter is a visual guide; the numbers are the truth.
• Do I need an account? An account is used to save your gear, rigs and progressions and keep them in sync. You can explore the app first; the app tells you when a feature needs an account.
• My gear is not in the list. Use "Can't find it? Add manually" in any gear picker. Tone matching for added gear uses the closest known equipment.
• Can I use artist tones with my amp? Yes. Pick the artist, pick your gear, and CordOS translates the settings to your controls. It gets you close; use your ears for the last step.
• Does CordOS work offline? The tuner, metronome, chords, scales and keys work without a connection. Saving and syncing need one.

Delete your account

Email privacy@cordos.app from the address on the account and we will permanently delete the account and all saved gear, rigs and progressions within 30 days. When in-app deletion is available you will find it under Settings → Account → Delete account.

Privacy

No ads, no tracking, and the tuner never records you. The full details are in the Privacy Policy.

Report a problem or suggest a feature

support@cordos.app for problems. hello@cordos.app for everything else, including press.