Pocket music theory
Pocket Theory
Every scale, chord and mode, and how they connect. Tap anything to follow it, the way you'd fall down a good encyclopedia, and end up somewhere you didn't expect.
The browser version works offline once it has loaded.
Worked out, not written out
Every page is calculated from the notes: 66 scales, 38 chords, every key and interval, all spelled the way a musician would spell them. Nothing is hand-copied, so nothing is wrong in one place and right in another.
Follow the thread
Every mention is a link. A scale shows the chords built on it and the modes hiding inside it. A chord shows every key it lives in and what to swap it for. A key names its relatives and gives you twelve progressions to play.
Hear it
Play any scale or chord. Hold a drone under a mode to hear what makes it different, then compare it with the scale it comes from. Hear a key's cadence resolve.
In your pocket
A tuner, a metronome and tap tempo are one tap away on every page. Piano, guitar fretboard or neck. Six looks and forty-two palettes. It all works offline.
More of it
Every screen here is the app itself, captured from the browser version.
Coming soon to iPhone. Works offline. No account, nothing collected.