MagicBPM: Tempo & Metronome

Instantly detect the BPM of any song in real time, or keep the beat with the precision built-in metronome. Fast, private, and works offline!

Know the tempo of any song — instantly.

MagicBPM listens through your iPhone's microphone and measures the BPM (beats per minute) of whatever's playing, in real time. Point it at a speaker, an instrument, or a record, and watch the tempo lock in. When you need to keep time yourself, switch to the built-in metronome.

All tempo detection runs on your device. Your microphone audio is analyzed live and never recorded, uploaded, or shared.

TWO TOOLS IN ONE • Live BPM detection — a dual-engine detector (autocorrelation + onset peak-picking) tuned for real music, so you get a confident reading even in a noisy room. A confidence indicator tells you when the reading is solid. • Built-in metronome — set a tempo by tapping, typing, or nudging it ±1, then press play for a rock-steady click. Eight time signatures with an accented downbeat, and it keeps playing even with the ringer on silent.

MORE THAN A NUMBER • Live tempogram — a scrolling heatmap of tempo over time. See the beat strengthen, drift, or shift between sections at a glance. • Tap tempo — nothing playing? Tap along and MagicBPM averages your taps into a steady BPM. • Dial it in — set a tempo range, pick a detection engine, choose a capture mode, and tune the noise gate to match your environment.

PRIVATE BY DESIGN • Tempo detection happens entirely on your iPhone. • Your microphone audio is never recorded, uploaded, or used to build a profile — it's analyzed in real time and discarded. • No account, no sign-in.

FREE, WITH AN OPTIONAL PRO UPGRADE MagicBPM is free and supported by ads. Upgrade to MagicBPM Pro with a single one-time purchase to remove every ad — no subscription, ever. Restore it anytime on any device signed in to your Apple Account.

MADE FOR Musicians, DJs, drummers, dancers, producers, and anyone who needs to find or keep a tempo.