Alternatives to OtoTheory

Chordio

Chordio suits composers, producers, teachers and learners who want music theory tools alongside composition and sheet music features.

ChordU suits musicians who want chord and notation versions of songs, with diagrams for guitar, piano, ukulele or mandolin.

Chordify suits beginners, learners, and working musicians who want chord guides for practice or playing along.

Autochords suits songwriters who want progression ideas and chord references for guitar, piano or ukulele on iPhone or iPad.

Chord ai

Chord ai suits beginners and casual users who want chord and beat information while listening or practicing.

It suits musicians, composers and music students analyzing harmony, constructing chords or learning chord theory on Apple devices.

ChordSequence

It suits songwriters, producers, music students, worship teams, learners, and teachers who want chord tools and playback in a browser.

HarmonyBuilder is suited to music students, teachers, composers, arrangers, songwriters, and musicians working with four-part harmony.

It suits guitarists exploring chord shapes, alternate tunings, and progressions.

ChordCraft

It suits producers and musicians who want browser-based progression generation, editing and playback.

ChordProgressions.org

It suits guitarists, pianists, songwriters, and music-theory learners working in a browser.

Tonaly suits musicians from different skill levels and instrument backgrounds, including guitarists, pianists, and producers.

chords·lol

It suits learners, teachers, and musicians wanting browser-based chord references, theory material, interactive tools, and printable charts without signup.

It suits composers and producers who want chord suggestions and multiple ways to inspect or explore progressions.

SongEngine suits musicians who want to build progressions and generate MIDI parts inside a compatible DAW.

It suits GO:KEYS 3 or GO:KEYS 5 owners who want ready-made or custom chord patterns on a phone or tablet.