ClockBeat · iPhone timing aid
Set a mechanical clock in time—and in beat.
ClockBeat turns the iPhone microphone into a focused pendulum-clock timing aid. Choose the movement’s target beat rate, listen for a minute, and see estimated daily rate, measured BPH, tick-tock asymmetry, and short-term stability.
Regulation
Useful numbers, without rounding away the adjustment.
Designed for audible mantel, cuckoo, wall, and longcase clocks in the common 1,800–7,200 BPH range.
Rate
Compare decimal-precision measured BPH with the selected target and see fast or slow seconds per day.
Beat symmetry
Measure the timing difference between alternating tick and tock intervals in milliseconds.
Signal confidence
Reject isolated missed ticks and unexpected sounds while reporting cadence stability and evidence quality.
A clean measurement
Listen for one quiet minute.
- Select the target BPH specified for the movement.
- Place the iPhone on a stable surface 10–30 cm from the escapement.
- Keep the room quiet and avoid handling the clock or phone.
- Make a small adjustment, allow the movement to settle, and measure again.
Privacy
Local by design.
Microphone analysis happens entirely on the device. ClockBeat does not upload or retain audio and includes no account, ads, analytics, or tracking SDK.
A short acoustic reading is a regulation aid, not a promise of long-term performance or a substitute for movement service.