Harmonic.Audio

Getting good is a long road.

Free guitar tools for the bit you’re working on. Try another chord shape, hear a scale or find that note further up the neck.

Keys, scales and chords

Tune in to any key.

Choose a key and play its scale. Try the chords below to see which notes they use on the neck.

Tuned to G major

  1. G1
  2. A2
  3. B3
  4. C4
  5. D5
  6. E6
  7. F♯7
  • Root
  • Third
  • Fifth
  • Other scale notes
  1. IGG · B · D
  2. iiAmA · C · E
  3. iiiBmB · D · F♯
  4. IVCC · E · G
  5. VDD · F♯ · A
  6. viEmE · G · B
  7. vii°F♯°F♯ · A · C
Signature
1♯
Relative
E minor
Neighbours
C · D
Open the full G major page

The apps

For tuning up and trying again.

Tuner is available now. Pitch and Beats are on the way, for singing and playing along.

  • Tuner

    Harmonic Audio Tuner, real screenshot

    Tune your six-string guitar, in standard tuning or something different. Save custom tunings and adjust the reference pitch.

    Download on the App Store
  • Pitch

    Harmonic Audio Pitch, design preview

    See the notes you sing as they happen. Record a take and listen back while you follow the notes.

    Coming soon

  • Beats

    Harmonic Audio Beats, design preview

    Choose a click or a drum pattern and set the tempo. It’ll keep going while you work on the tricky bit.

    Coming soon

How we work

A few things to know.

You can use the tools without signing in. Here’s how we handle the rest.

  1. Free to use

    All the tools and music references here are free. The apps are free too.

  2. No account needed

    Open a tool or reference page and use it. You don’t need to sign in, and the tools stay free when you do.

  3. Audio stays on your device

    Tuner processes sound on your phone without uploading it. In Pitch, recordings stay on your device unless you choose to export them.

  4. Checked before publishing

    We use AI to help with drafts. A person reads the written pages before they go up. The music references are calculated from music theory and tested on every build.

Tuner tests and site privacy

Tuner median steady-tone error
0.01 cents
Third-party site requests
0
Audio uploaded by Tuner
0 bytes

The tuner error was measured using generated tones in a synthetic benchmark. Real-guitar accuracy has not been measured. Read the Tuner test results