GTuner: Guitar Tuner

Accurate tuner & metronome

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

A clean, accurate on-device guitar tuner with automatic string detection, a guitar-headstock visual, and a built-in metronome. Tune your guitar fast with a clean, accurate tuner that just works. GTuner listens through your iPhone's mic and shows exactly which string you're playing and how to bring it into tune with a big note display, a smooth needle meter, a precise cents readout, and a satisfying green "in tune" lock. A photo-real guitar headstock lights up the string you're tuning, so you always know which peg to turn. Everything runs entirely on your device. The mic is never recorded, and nothing is ever sent anywhere — no account, no ads, no tracking. FEATURES • Automatic string detection — just play, and GTuner finds the string • Tap any string to tune it manually • Cent-accurate pitch detection with a clear, responsive meter • Guitar-headstock visual that highlights the active string • Built-in metronome — adjustable tempo, tap tempo, time signatures, accented downbeat • Clean, distraction-free design TUNINGS Standard, Drop D, and Half Step Down are free forever — along with the full tuner and metronome. Unlock 12 more power and open tunings with a single one-time purchase (no subscription): Whole Step Down, Drop C#, Drop C, Drop B, Open G, Open D, Open E, Open C, Open A, Open D Minor, Open G Minor, and DADGAD. Private by design. On-device by default. Tune up and play.

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The developer, James Jordan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • James Jordan
    Size
    • 2.9 MB
    Category
    • Music
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 James Jordan
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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