Fretwise: Guitar Theory
Guitar scales and chords you can see, hear and play.
Every scale and chord in all 12 keys, on a fretboard that plays each note when you tap it. Try it below, then take it with you: the app is free on Android.
STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E
Tap any note to hear it.
Popular scales
20 scales and modes × 12 keys = 240 fretboard diagrams.
A Minor PentatonicE Minor PentatonicA BluesC MajorG MajorE MinorA MinorD DorianE PhrygianG MixolydianF LydianA Harmonic MinorE Phrygian DominantC Major Pentatonic
All guitar scales → Free in the app
- 20 scales and modes, from the major scale to Phrygian dominant and the altered scale
- 23 chord types with up to 5 CAGED shapes each, in every key
- 5 CAGED positions per scale, in standard or compact framing
- 7 tunings: Standard, Drop D, Half-Step Down, D Standard, Open D, Open G and DADGAD
- Notes, degrees, fingers or dots on the fretboard, in sharps or flats
- A realistic plucked-string sound for every note, chord and scale run
Fretwise Unlimited $9.99 once
- Songwriter Handbook: the chords of any key, filtered by mood and tension
- Chord practice and progression looper
- 51 genre loops across pop, blues, jazz, flamenco, lo-fi and metal
- No ads, no subscription
Fretwise for Android · Free
Every scale and chord in your pocket.
This page is a small slice of the Fretwise app. On your phone you get all 20 scales and 23 chord types in every key, 7 tunings including Drop D and DADGAD, and the CAGED shapes on one tap. No sign-up.
Get it free onGoogle Play iPhone version coming soon
- Songwriter Handbook: the chords of any key, filtered by mood
- 51 genre practice loops, from blues to flamenco and neo-soul
- One purchase, no subscription, ads removed
Questions
- Is Fretwise free?
- Yes. Every scale, chord, CAGED shape and tuning is free. Fretwise Unlimited is an optional one-time purchase that adds the Songwriter Handbook and the practice loops and removes ads. There is no subscription.
- Does Fretwise work offline?
- Yes. The fretboard, the scales and chords and the plucked-string sound all run on your phone, so you can practise with no connection.
- Which tunings does it support?
- Standard, Drop D, Half-Step Down, D Standard, Open D, Open G and DADGAD. Scales and chord shapes are recalculated for each tuning.
- Is there an iPhone version?
- Fretwise is live on Google Play for Android. The iPhone and iPad version is coming soon.