Pick an input
System audio, an interface, a virtual device like BlackHole, NDI audio — or just your laptop's built-in microphone pointed at the room.
Never tap tempo again. Automatic beat tracking and tempo tapping for Resolume, TouchDesigner, or anything that works with Ableton Link — from the audio in the room, in about 5 milliseconds.
Starting from $49.95 · macOS · 18.9 MB download
~5ms latency
Listens to audio or mic
Ableton Link · OSC
Tested in loud, clipping rooms
Keeps time for
Three steps, no click track
Point it at the music. Go.
No Pro DJ Link, no timecode, no tapping a spacebar in the dark and hoping it holds.
BeatSage finds the beat
A lightweight neural network trained on thousands of hours of music across every genre reads the groove in realtime and locks to it, tempo and phase.
Your rig follows
Tempo goes out over Ableton Link, or as OSC messages if you'd rather patch it yourself. Resolume, TouchDesigner and MadMapper just start moving in time.
One dial, one job
The tempo, and how sure it is
BeatSage is a single small window that tells you the two things you actually need mid-set: the current BPM, and where you are in the bar. The ring fills as it locks on, so you can see confidence at a glance from across a dark booth.
- ✓ Live BPM readout with beat-phase indicator
- ✓ Follows tempo changes as the set moves
- ✓ Floats always-on-top over your visuals app
- ✓ Runs in realtime and won't freeze your rig
Built for real venues
Tuned to the room
Tuned to the room
you're actually in
Club sound is loud, clipping and late — the PA reaches the audience milliseconds after it leaves the desk. BeatSage was tested in exactly those rooms, and gives you the controls to compensate rather than pretending the problem doesn't exist.
- ✓ Distance-to-audience compensation, in feet or milliseconds
- ✓ Clamp the tempo range so it can't chase a half-time ghost
- ✓ Metronome fallback tempo for the quiet moments
- ✓ Menu-bar icon and always-on-top toggle
Everything you need
Key features
Small, fast, and built to survive a live show.
Automatic beat tracking
A neural network trained on thousands of hours of every kind of music finds the beat for you and stays on it.
~5ms latency
Fast enough that the tempo you see is the tempo that's playing. No drift, no catching up after a drop.
Audio or microphone
Take a clean feed from your computer's audio, or just let the laptop mic listen to the room. Both work.
Club-proof
Loud, compressed, clipping front-of-house sound doesn't throw it off. We've tested it in that room.
Ableton Link
Share tempo and phase with everything on the network — Resolume, TouchDesigner, Live, and the rest.
OSC output
Prefer to wire it up yourself? Send the tempo as OSC messages and patch them wherever you like.
Speaker distance compensation
Tell it how far the ideal audience position is from the PA and it lines the beat up with what they hear.
Tiny and out of the way
An 18.9 MB download, one small always-on-top window and a menu-bar icon. Nothing else to manage.
Good to know
Learn more
Works with
Resolume, TouchDesigner and MadMapper out of the box, plus anything that speaks Ableton Link or OSC.
Also see AudioSliceRequirements
macOS · 18.9 MB download
Windows beta is in progress — get in touch if you'd like to try it.
Stop guessing the BPM