Umbrex: Music Visualizer

A music player for your Plex Media Server and your own files, with 29 reactive visualizers and on-device key and BPM analysis.

Stream your Plex library or import from the Files app, and keep each source in its own library. Let the visualizers move with the music, fullscreen or inside the album art. Then find the key and BPM of every track and mix in key with Camelot-wheel colours.

Analysis runs entirely on your device: your music is never uploaded. No sign-up, no ads, no tracking.

FEATURES • Plex Media Server streaming with plex.tv sign-in, including synced lyrics from your server where available • 29 reactive visualizers that move with the music, fullscreen or inside the album art • On-device key and BPM detection for your local and Plex tracks • Camelot-wheel keys for harmonic mixing • Sort, filter, and build Up Next queues by key and BPM • DJ modes: beatmatched transitions between tracks, in order or shuffled • Slowed + reverb and nightcore remixes, artwork treatment included • 10-band graphic EQ with presets and a preamp • CarPlay, Siri, and Shortcuts support • Pocket Operator sync and AUM MIDI tempo and key senders

Supports MP3, AAC/M4A, WAV, AIFF, FLAC, and CAF files.

Key and BPM analysis, the waveform seek bar, beatmatched DJ transitions, and beat-synced effects require iOS 27 or later. Playback, Plex, visualizers, the EQ, remixes, and CarPlay work on iOS 18 and later.

Discovery signals