Chordbot vs Zoundroom

Chordbot is a songwriting app and backing-track generator for creating and playing chord progressions in different musical styles. It is available on Android and iOS. Its library includes more than 60 chord types in all inversions, with over 70 comping-style presets and the option to build styles from more than 400 instrument tracks. An automatic or manual inversion selector helps shape chord transitions, while repeatable song sections can each use a different comping style or arrangement. Song-O-Matic can generate progressions when users need ideas. Songs can be exported as MIDI for DAW editing or as WAV for sharing. Song files use JSON and can be shared through file-sharing apps; only JSON files can be imported back into Chordbot. Lite is free, but saving and exporting are disabled. Pro costs $4.99, paid once and enables both. The maker permits commercial use of creations in recordings and performances under a perpetual, non-exclusive, royalty-free license.

Zoundroom is a workspace for artists to collect and develop music in progress, keeping projects, lyrics, recordings, notes, and collaborators together. A project can represent a song, EP, or album, with cover art, custom tags, and filters for names, tags, or file types. Users can record audio, import common audio formats, and upload PDFs such as sheet music, lyrics, tablature, or chords. Notes support colored text and sections, and can keep a recording alongside a lyric. An AI assistant offers chord, lyric, structure, rhyme, and synonym suggestions tailored through an artist questionnaire. Collaborators can join through a one-time code and comment at timestamps on audio, though invitees need a Zoundroom account. The Free Plan allows two active projects and sharing with up to two artists. Pro is €4.99 a month, billed €59.99/year with annual payment; Band is €12.49 a month, billed €149.99/year. Mobile and browser versions sync under one account; the browser app works on macOS or Windows computers. Zoundroom does not mix or master music or replace a production environment.