Tonal Explorer

Scales, Modes, Chords & Tuner

$4.99

Tonal Explorer is a hands-on music-theory toolkit for guitarists, pianists, producers, students, and teachers. Pick any key and mode and instantly see how the theory connects across an interactive fretboard, a piano keyboard, a chord matrix, and the circle of fifths — all in one fast, offline app. EXPLORE SCALES & MODES • All 12 keys with correct, readable note spelling for every mode • Major, melodic minor, harmonic minor, harmonic major, and double harmonic — 35 modes in all • Swipe to shift the tonal center; drag to transpose the whole scale like a capo • Brightness and tension controls to explore the color of each mode SEE THE HARMONY • A 7-row chord matrix from triads through 13ths, named correctly for every key • Roman-numeral analysis with chord quality • Per-chord extensions you can dial in degree by degree PLAY IT ON ANY INSTRUMENT • Interactive guitar fretboard with alternative tunings (Drop D, DADGAD, Open G, and more) • Piano keyboard with scale tones and chord tones highlighted • Chord voicing suggestions — open guitar shapes and keyboard inversions • Built-in synth plays notes, chords, and scales — all generated on device TUNE UP — NATIVE CHROMATIC TUNER • Real-time pitch detection using your device's microphone • Stable, accurate needle with cents display • Audio is processed entirely on your device and is never recorded or shared KEEP TIME • Metronome with tap tempo, time signatures, and a downbeat accent WORKS OFFLINE • Everything runs on your device — no account, no sign-up, no internet required, no ads, and no tracking of any kind. The free web version lives at tonalexplorer.com. The app brings the full experience to your home screen with native audio, the microphone tuner, and full offline use.

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• Every note is now tappable. Tap any piano key or fretboard dot to hear its exact pitch - including notes outside the scale. • One-tap selection. Tap a highlighted note to select it across the keyboard, fretboard, and scale strip in a single tap. Tap it again to replay it and compare octaves, or tap an empty area to clear the selection. • Smarter guitar voicings. Diminished and m7b5 chords now lead with friendly, playable shapes, and fingerings are better across alternate tunings like Open G and DADGAD. • Chord sheets match the app. Shared and printed chord sheets now mirror exactly what you see on screen, including seventh chords and extended harmonies. Plus accessibility improvements and polish throughout.

Version 1.2

The developer, Scott Schmitt, 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
    • Scott Schmitt
    Size
    • 3 MB
    Category
    • Music
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Scott Schmitt
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.