Start with the shortest fix.

The tuner cannot hear the guitar

1. Allow microphone access in iPhone or iPad Settings.
2. Move the device about an arm’s length from the guitar.
3. Mute the other strings and pluck one open string at a time.
4. Turn down nearby audio and recalibrate in a quieter room.

Microphone audio is analysed on the device and is never recorded, saved or uploaded.

Tuning looks wrong for an arrangement

1. Open the arrangement and choose “Tune for this arrangement.”
2. Check the requested tuning and capo fret separately.
3. Do not retune a string to compensate for a capo.
4. Use the meter’s confidence guidance and let one string ring clearly.

A Pro purchase is missing

1. Confirm the App Store is using the Apple Account that made the purchase.
2. Open GuitarHarbor Pro and tap “Restore Purchases.”
3. Wait for Apple’s confirmation before retrying.
4. For billing or refund questions, use Apple’s purchase support.

Haro is offline or does not answer

Haro needs a network connection, a verified app installation and remaining monthly allowance. Cloud narration can be disabled while on-device narration remains available. Haro automatically falls back to a small on-device guide for supported questions when the cloud service cannot answer.

Do not send personal contact details or sensitive information. Haro cloud AI is intended for people age 13 or older; a parent or guardian must choose and supervise it for anyone younger.

Turn off or delete Haro cloud data

Open Haro and tap its settings menu. “Turn off cloud AI” removes consent on the device. “Delete Haro cloud data” verifies the current app proof and permanently removes the pseudonymous cloud account, sessions, quota records, request metadata and cloud-credit records. Use deletion before removing the app if you want both local and cloud records removed.

Contact

GuitarHarbor is published by Tim Grootes. Email hello@bumblly.com. Include the app version, device model, iOS version and a short description. Do not include passwords, full payment information, Apple credentials or sensitive personal data.

Support is provided in English and Dutch. Effective legal-document date: 30 July 2026.