cratefox

This is the app. Today's build.

Not a mockup and not a concept video: these are screenshots of the running app on a real machine, holding the real crate behind the sample crate page: 33 tracks in the app today, 32 in the export shown there (one track landed after that export). What you see here is what installs.

version 20260720.2028 · captured 20 July 2026

Add tracks

One box. Paste a Spotify, Apple Music or YouTube link, drop a screenshot of a tracklist, or just type a name. Tracks download onto your machine over your own connection, and the folder bar shows exactly where they land. Downloads are shared back by default; a switch in the app turns that off.

The Add tracks screen: a link box with the 'Build from a playlist' mode selected, and a folder bar showing where downloads save

Crate

The set, sorted to mix: every track with its key, tempo and energy, the harmonic run drawn on the Camelot wheel, and honest flags on the 13 keys worth a listen.

The Crate screen: 33 tracks sorted low to high tempo with key chips, energy, mix maps, and the harmonic run wheel

Export

Rekordbox, a USB folder, or a plain playlist. One click writes the files next to your tracks, in crate order, with key and BPM in every tag. The export is written entirely on your machine.

The Export screen: Rekordbox target selected, a playlist preview in crate order, and an Export to Rekordbox button

Try it on your playlist.

Cratefox is invite-only while it is in beta. Request a code and you are in the next batch.

Get your invite → See the exported sample crate →