What it is

Umbrex finds the key and BPM of every track in your library, on device, then lets you browse, sort, and mix by them. Bring music in from the Files app or your Plex Media Server and keep each source in its own library. Analysis runs entirely on your device — your music is never uploaded, and there is no sign-up, ads, or tracking.

Features

On-device key & BPM

Analyze the musical key and tempo of every local and Plex track without sending your music anywhere.

Camelot mixing

Browse and sort by Camelot-wheel keys, then build Up Next queues that mix in key.

29 reactive visualizers

Fullscreen or inside the album art, the visualizers move with the music as it plays.

Slowed + reverb & nightcore remixes

Render slowed-and-reverbed or nightcore versions of your own tracks, with matching artwork treatment.

Plex streaming & CarPlay

Stream from your Plex Media Server with plex.tv sign-in, and drive the whole library from CarPlay.

Analysis on your device

Umbrex finds the key and BPM of every track in your library and runs entirely on device. Your music is never uploaded, and no account or sign-up is required.

Mix in key

Keys are shown on the Camelot wheel, so you can sort, filter, and queue tracks that mix harmonically. Browse by key or BPM, or build an Up Next queue that keeps the energy where you want it.

Bring your own library

Import from the Files app or stream from your own Plex Media Server, and keep each source in its own library. A fullscreen cassette player, a live waveform seek bar, a 10-band graphic EQ, and 29 reactive visualizers round it out.

Private by design

Analysis happens on your device, and there are no analytics, ads, or tracking. Plex is optional and talks directly to plex.tv and your own server.

Umbrex