GroovelockKey & BPM · iPhone
Hear the key.
Lock the tempo.
Point your phone at the speakers. Groovelock listens and shows the key and tempo of whatever is playing on the Groove Wheel, live, without recording a thing.
Hover a section · neighbours mix cleanly
How it works
- 01
Point
Hold your phone toward the speaker. A booth, a living room, a car: anywhere the music is.
- 02
Lock
Tap LOCK. About fifteen seconds of the track with the beat playing is all it needs.
- 03
Mix
Read the key on the Groove Wheel, a circle of fifths with relative minors on the inner ring. Anything touching it mixes cleanly. The tempo sits underneath.
Two ways to listen
Lock
One reading, frozen. For checking a track before you play it, or settling an argument about what key it's in.
Live
Keeps listening. When the track changes, the reading follows on its own. For the booth, when your hands are busy.
Four looks
Classic, Neon, Outline, Solid. Light and dark.
Nothing leaves your phone.
The audio is analysed in memory, in real time, and never recorded or uploaded. No account, no analytics, nothing collected. The microphone is only open while you're listening, and the app works fully offline.