Alcove LabsHorology
Know how your watch is really running.
Rest a mechanical watch against your iPhone or iPad. Horology listens to the beat and shows its rate, beat error and amplitude, each with a tolerance, in about a minute.
What you see
Honest numbers
Seconds per day
How fast or slow the watch runs, with a tolerance so you know how far to trust it.
Milliseconds
How evenly the escapement ticks and tocks.
Recognised automatically
From 12,000 to 36,000 beats per hour, no setting to get wrong.
When it's clear
Shown only when the sound is clear enough to read it.
Horology waits until it has locked onto the beat before it shows a number, stops by itself when the reading is steady, and tells you if the rate moved. If it can't hear the watch, it shows you where to place it instead of guessing.
In the app
Your collection, at a glance
Pricing
Free to measure. Pro to track.
Measuring is free and unlimited. A one-time Pro purchase adds reading history, charts, CSV export and more than one case. No subscription, no ads. Everything stays on your device.
Support