Tonic: Guitar Fretboard

Scales, CAGED boxes & chords

Free · In‑App Purchases

Guitar scales, boxes and chords on an interactive neck, in any tuning. See and learn scales, chords and shapes on an interactive guitar fretboard — in any key and any tuning. Pick a key and a scale or chord. Tonic lights up every place it lives on the neck, labelled by note name or by scale degree. Tap any note to hear it. Change the tuning and the whole map redraws to stay correct — Drop D, Open C, ten tunings in all. WHAT'S IN IT • The whole neck: 22 frets, 14 scales, 9 chord types, every key, ten tunings (free: the pentatonics in standard tuning; the rest is Tonic Pro) • The five pentatonic boxes and CAGED positions, computed for your tuning. Isolate one box, number it in playing order, or climb the neck diagonally (Tonic Pro) • Chord grips with muted-string and open-string markers (Tonic Pro) • Lessons from the open strings to CAGED and the blues. Every diagram is a playable fretboard: tap it, hear it (first lesson free, the rest is Tonic Pro) • A metronome with tap tempo, accents and subdivisions. It keeps clicking with the screen locked (Tonic Pro) THE DEAL Your first 5 days: everything unlocked, nothing to cancel. After that the board stays free: standard tuning, both pentatonic scales, every key, both labellings, and the first lesson. Tonic Pro is a one-time purchase — everything above is yours for good, updates included, on every device, with Family Sharing. No subscription. No account. No ads.

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- Bug fixes and stability improvements

Version 1.1.1

The developer, Andrii Teologov, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

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
  • Andrii Teologov
Size
  • 7.9 MB
Category
  • Education
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Andrii Teologov. All rights reserved
  • Developer Website
  • Privacy Policy