Terms of Use
Last updated November 10, 2026
Your use of the app is covered by Apple's Standard End User License Agreement, together with the terms below.
Free trial and one-time unlock
- You can start a free 7-day trial from inside the app. Starting it is free, and nothing is charged when it ends.
- After the trial, the app's features stay locked until you buy the one-time unlock.
- The unlock is a single payment, not a subscription. It is charged to your Apple ID when you confirm the purchase.
- You can restore the unlock on any iPhone signed in with the same Apple ID, using Restore purchase.
- Offer codes from us can be redeemed with Redeem code. Refunds are handled by Apple under its policies.
Tuning accuracy
The tuner is designed to be accurate, but readings depend on your microphone, background noise and your instrument. Use your own judgment, especially when tightening strings. Turn the pegs slowly. We aren't responsible for broken strings or damage to instruments.