Chordbot vs Udio

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.

Udio generates songs from prompts describing a style, mood or theme, and each prompt produces two songs. Listed clip lengths are 32 seconds or 2 minutes 10 seconds. The Create page provides sliders and fields for refining tracks, experimenting and generating variations. Its library has search, filters, favorites, playlists and a trash bin for recovering deleted songs, while the player can share songs. Udio offers vocal generation and audio upload, but audio downloads—including stems—are disabled. Paid subscribers can upload audio for extending, inpainting, remixing, stylizing or editing in a waveform-focused Session editor; uploaders must own the rights, and commercial or copyrighted tracks are not allowed. The service is available on the web and iOS. The iPhone app supports track extension but not uploading, remixing, inpainting, styling or title-based song search; Udio says there is no Android app. Free service includes 10 daily and 100 monthly credits. Standard costs $10.00 per month, and Pro costs $30.00 per month.