ChordU
7.9#1 in chord finder softwareFrom $50 a yearFree planAndroidiOSWeb
VisitChordU suits musicians who want chord and notation references from audio or YouTube songs. It supports diagrams for guitar, piano, ukulele, and mandolin.
Chord Director is for GO:KEYS 3 and GO:KEYS 5 owners who want to load, edit, or create chord patterns from a mobile device. Accessing its pre-made patterns requires a free Roland Account.