WatchHapticMetronome turns your Apple Watch into a precision musical tool. A haptic metronome, a BPM detector, and a guitar tuner in one app, always on your wrist. HAPTIC METRONOME Feel the beat through precise wrist haptics instead of listening to a click. Perfect for practising, on stage, or whenever you need to keep time without disturbing others. Set any tempo from 40 to 200 BPM using the Digital Crown, and the metronome fires each beat with sub-millisecond accuracy. — Accent the downbeat with a stronger haptic pulse — Choose your time signature: 2, 3, 4, or 6 beats per bar — Half-time mode automatically activates above 160 BPM, so you always feel the musical beat rather than a subdivision — Optional subdivision haptic for practising 16th-note passages — Built-in countdown timer: set a practice session from 1 to 30 minutes — Optional subdivision haptic for feeling the offbeat grid BPM DETECTOR Hold your Watch near any music source and WatchHapticMetronome detects the tempo in seconds. Using a professional filterbank autocorrelation algorithm, the same approach used in studio software. It analyses the rhythmic content across six frequency bands simultaneously, making it accurate even on complex recordings with guitar arpeggios or fingerpicked patterns. Once the tempo stabilises, the metronome is set automatically. GUITAR TUNER The built-in chromatic tuner listens through the Watch microphone and detects which of the six standard guitar strings you are playing. A visual needle shows how many cents sharp or flat you are, the string strip highlights the detected string, and the display turns green the moment you are in tune. — Covers all six standard tuning strings: E2, A2, D3, G3, B3, E4 — Cents-accurate deviation display — Smooth needle animation for easy fine-tuning — Silence gate prevents false readings between notes DESIGNED FOR THE WRIST Every control is optimised for Apple Watch. Scroll the Digital Crown to adjust BPM instantly, even while the metronome is running. The interface is clean, dark, and readable at a glance on any Apple Watch display. No iPhone required. No subscription. No ads.