Restore purchases
Open Guitar Tuner, go to the upgrade or settings screen, and tap Restore Purchases. Use the same Apple ID that made the purchase.
App support
Guitar Tuner Support
Chromatic guitar tuner with 30 alternate tunings preset, on-device mic pitch detection, no ads, no weekly traps — instead of GuitarTuna’s ad-loaded free tier or Fender Tune’s $5-per-month Pro.
Cancel or manage subscription
Apple manages App Store billing. Open iPhone Settings, tap your name, choose Subscriptions, then select Guitar Tuner.
Before contacting support
Include your device model, iOS version, app version, and the exact action you were trying to complete.