Make your music DJ-ready.
Paste a playlist or point at your own tracks. TrackStar DJ analyzes BPM and key, masters, locks the tempo, puts the beatgrid on the "1", adds hotcues and loops, splits stems — and hands it all to Mixxx, rekordbox, Serato, Traktor or your Pioneer USB.
macOS 13 or newer, Apple silicon. No account needed to start.
Every set starts with hours of prep.
Finding the tracks, checking tempos, fixing beatgrids that miss the downbeat, setting cues, making stems. TrackStar DJ does that work in one pass, so you get to the part that matters: playing.
The "1" on the downbeat
A beatgrid you can trust: analyzed with a downbeat model, checked by ear with the built-in beat check, locked with one click.
Tempo-lock
Tracks that drift get warped to a constant tempo, without smearing the groove. Old funk, live drummers, vinyl rips: all mixable.
Stems & club edits
Four stems in Native Instruments' .stem.mp4 format for Mixxx, plus a club edit with extra punch — from any track.
Everywhere you play
Playlist in DJ order with hotcues and loops, exported to Mixxx, rekordbox.xml, Traktor, Serato tags and a Pioneer USB stick.
Three steps, one button.
Everything runs on your Mac. Your originals stay untouched; TrackStar DJ works on a copy.
Add music
Paste links to a playlist, album or tracks, or pick a folder from your own library. Deezer, YouTube and SoundCloud links work through open-source tools you install yourself.
Choose what to make
DJ-ready: master, tempo-lock, beatgrid, hotcues and loops, exports. DJ-ready + stems adds stems and club edits. Or set every step yourself.
Press Download
Watch the activity log, come back when it's done. Open Mixxx, rekordbox or Serato and play.
Every ✓ makes the next beatgrid better.
When you approve or correct a "1" in the beat check, TrackStar DJ can share the grid numbers — never the audio — with the Beatgrid Lab. That data trains a downbeat analyzer built by DJs, for DJs. Off by default, one tick to join.
About the Lab
Start with 10 free tracks.
No account, no card. When you want more: €49 a year or €5 a month, cancel anytime.