Autochords vs Chordify

Autochords is an iPhone and iPad app that helps songwriters find chord progressions and learn chords on guitar, piano and ukulele. Choose a progression style and key to see a main progression and alternatives for other song sections. Progressions can be previewed at a selected tempo with piano, guitar or ukulele playback, and the app provides diagrams for each instrument. Its built-in library contains dozens of progressions across styles of western music, though some require PRO. The free plan provides the app's free features. PRO adds more progressions, favorites, tempo changes, color themes, custom progressions and MIDI export. Export uses the iOS share sheet to open files in compatible apps, including desktop DAWs such as Logic or GarageBand. PRO costs $2.99 a month, $12.99 a year or 29.99 USD once for lifetime access. If a PRO subscription expires, existing favorites and custom progressions remain accessible, but users cannot add or remove favorites or create or delete custom progressions. Astrocode Pty Ltd develops the app, which is operated by a solo developer.

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.