Chordify vs OtoTheory

Chordify turns music from YouTube, SoundCloud, or a private collection into chords aligned with an interactive player. Its catalog search covers YouTube, SoundCloud, and 36 million songs already chordified. Chordify uses deep neural networks to recognize chords and track beats, letting players work with guitar, ukulele, piano, or mandolin; mandolin is available only on the website and Android app. Web and mobile versions share chordified or favorited songs. The Toolkit includes a chromatic tuner, metronome, chord practice, and live chord detection, with all Toolkit features unlocked in Premium Plus. Chords can be exported as PDF or MIDI, and songs can be embedded on websites or blogs, although edits are not supported in embeds. A free plan is available. Basic costs $24 a year, Premium costs $42 a year, and Premium Plus costs $54 a year, each billed yearly. Deezer songs are unavailable, and Deezer links work only on the website.

OtoTheory is a chord progression builder and music theory companion for guitar, bass, and keyboard players, songwriters, and DAW users. Its iOS app can identify chords, key, and song sections from imported audio or an on-device guitar or piano recording. Users can paste progressions from ChatGPT, Claude, or Gemini for Roman numeral analysis and playback with grooves. The app lists 19 groove patterns and more than 50 progression presets; OtoTheory AI suggests chords using musical feel, theory, and emotion. Pro exports MIDI in Groove, Groove + Theory, or Chords Only modes, including BPM, section markers, and chord names. The maker says those exports can be used with Logic Pro, Cubase, Ableton, and other DAWs. OtoTheory is available on iOS and the web, but the web version has fewer features and Pro is iOS-only. The free iOS plan allows three local sketch saves and excludes MIDI and audio export. Pro is listed from $5.99/mo; its annual plan is $49.99/year, and Lifetime costs $99.99 once.