CAGED
Any chord, five places, one neck
The five forms are how the fretboard repeats itself. Once you can see them, no chord lives in just one spot again.

The explorer, live in the app: pick a root and a quality — major, minor, sevenths — and see the same chord built five ways up the neck, C form into A form into G, E and D, each grip ghosted in place.
Chord tones keep their colors, so you can watch the third move from string to string as the form changes — the thing the CAGED system is actually FOR, and the thing a chart of five separate boxes never shows.

Then it gets drilled
Name the Form shows you a grip and asks which form it is. Walk the Forms makes you find the next one up the neck. Build the Form hands you an empty board and a name. Three drills, one instinct.
Lay the pentatonic box over any form and the lead lines connect to the chord under them — the moment CAGED stops being trivia and starts being a map.
All of it lives in the app.
Create a free account and it is yours — no card, no trial clock, on the web today and on iPhone as soon as the App Store door opens.