CortexDJ vs Mixed In Key
Mixed In Key tags your library for harmonic mixing in another app. CortexDJ analyzes and then builds and renders the set. Here is how they compare.
The short version
Mixed In Key analyzes your tracks so you can mix harmonically in another DJ app. CortexDJ analyzes your tracks and then builds and renders the set. If you already own Mixed In Key, CortexDJ reads the key and energy tags it writes into your files, and on Windows the results in Mixed In Key's own library too.
Side by side
| Feature | CortexDJ | Mixed In Key |
|---|---|---|
| What it does | Analysis, then a finished, rendered set | Key, BPM and Energy Level, plus up to 8 cue points exported to Traktor, Serato and rekordbox[1] |
| Price | Free for home use; Pro $7.45/mo or $59/yr; Lifetime $127 | Mixed In Key 11 $58; 11 Pro $99; both one-time[2, 1] |
| Mixing | Builds and renders the set; live decks with auto-DJ | Pro has a two-deck "Test DJ Mix" preview[3] |
| Stems | On-device stem separation | Stem separation and export in Pro[3] |
| Mashups | Mashup finder and builder | Separate Mashup app, $29[2] |
| Reads the other’s results | Reads MIK and Beatport tags in your files; on Windows also MIK’s own library (read-only) | — |
| Platforms | Windows 10/11; macOS beta (Apple Silicon) | Windows and Mac[4] |
Where Mixed In Key leads
Mixed In Key is a long-standing specialist in harmonic tagging, with automatic cue points that go straight into the DJ app you already use[1]. If you mix live in rekordbox, Serato or Traktor and just want better tags, it's a focused, one-time purchase.
Where CortexDJ leads
CortexDJ goes from analysis to a finished set. It picks tracks that fit, orders them by key and energy, beatmatches on the kick drum, and renders a WAV or FLAC with a timestamped tracklist. It also exports the set in play order to rekordbox, Serato and five more DJ apps, so it can go back into the app you play on. All of that is free for home use.
A note on accuracy: no two key detectors agree on every track. CortexDJ reads the Mixed In Key results already in your files (and, on Windows, in Mixed In Key's own library), and the library shows where each key came from, so the work you've put into tagging isn't lost.
Where CortexDJ falls short
CortexDJ works with music files you own: it does not play from Spotify, Apple Music, TIDAL or any other streaming service. Rendered sets come out as WAV or FLAC (no MP3). The macOS version is a beta for Apple Silicon only. MIDI controllers, recording and live-streaming need Pro or Lifetime.
Which should you choose?
Choose Mixed In Key to tag your library for live DJing in another app. Choose CortexDJ to get the set itself. They work well together. More options: Mixed In Key alternatives.
Try CortexDJ free
Point it at a folder of your own music and get a finished, beatmatched set, rendered to WAV or FLAC. Windows 10/11 and macOS (Apple Silicon, beta). The first set needs no key.
Download freeSources
Every competitor fact on this page comes from the vendor's own page, read on October 14, 2026. Prices and features change; check the vendor before you buy, and tell us at hello@cortexdj.com if something here is out of date.
- Mixed In Key: learn more: https://mixedinkey.com/learn-more/
- Mixed In Key shop price list: https://shop.mixedinkey.com/api/shopitems/with-prices
- Mixed In Key Pro: https://mixedinkey.com/pro/
- Mixed In Key Pro release notes: https://mixedinkey.com/release-notes/mixed-in-key-pro/