
ChordDeck
5.9#20 in chord finder softwareFrom $2.99 a monthiOSWeb
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ChordDeck suits guitar players who want randomized progression practice, fretboard chord references, and scale exercises. It is useful for people practicing on iOS and web with synchronized sessions.
ChordU suits musicians who want chord and notation references from audio or YouTube songs. It supports diagrams for guitar, piano, ukulele, and mandolin.