Offtrack vs SetPrep

Offtrack is an AI DJ app that shortens songs and mixes them with transitions. Smart Mix trims tracks, queues songs based on how they fit together, and creates transitions; Highlight Mode focuses playback on song highlights. On iOS, users can adjust highlight lengths, edit the queue, save mixes as playlists, sort tracks by BPM or energy, and filter explicit songs. The iOS app works with Spotify Premium, Apple Music, TIDAL, SoundCloud Free, a local music library, and CarPlay, though catalogue availability varies: Spotify Premium and Apple Music are partial, TIDAL is full, and SoundCloud Go+ tracks are unavailable. Android supports Spotify Premium and SoundCloud Free, but its FAQ lists offline playback, EQ, saved transition points, and saved mix order as not yet available. Offtrack can recommend tracks matching a listener’s taste and add them to a mix. The Free plan includes unlimited Smart Mix and Smart Queue, limited Highlight Mode plays, and discovery of up to 300% new songs. Pro is $4.99 a month and includes unlimited Highlight Mode plays.

SetPrep is a desktop app that plans DJ sets from an existing music library. Choose a mixing style and it returns an ordered set, giving each track an energy-arc role, a transition note, and an explanation of its selection. It reads libraries from Rekordbox, Serato, or Traktor, and can also work from a folder of audio files. Ten built-in mixing-style templates draw on analysis of real artist sets. SetPrep can write colour codes, transition notes, and star ratings back to supported DJ libraries. Other library tools include de-duplication, locating missing files, filename repair, and finding forgotten tracks. The beta is available on Mac with Apple Silicon or Intel and Windows with x64 or ARM64, but downloads are invite-gated. The free plan costs nothing and allows three generated mixes per calendar month. Pro Monthly costs £5.99 a month; Pro Annual costs £59.99 a year. Hot cues, loops, memory cues, and structural cues are described as coming soon.