Horology

Support

Questions, bug reports or ideas: [email protected]. In the app, Settings › Send Feedback adds the watch and your last numbers so I can see what happened.

Getting a reading

Where do I put the watch?

Touch the crown side of the watch to the edge of the phone where the microphone is. The in-app guide shows the spot for your device.

It can't find the beat.

Use a quiet room, keep the watch still and press it lightly against the phone. Loud sounds pause the measurement. After a while the app shows the placement picture.

How long does it take?

It locks onto the beat within a few seconds, then measures until the reading is steady, up to about a minute.

What are the two rows of dots?

That's the trace: ticks on top and tocks below, each plotted against a perfectly steady line. Flat rows mean the watch runs true. Rows that climb mean it runs fast and rows that sink mean slow; the gap between their centres is the beat error.

How accurate is it?

Every number comes with a tolerance. Rate is solid for most watches; amplitude is experimental and depends on the lift angle, so treat it as a guide.

Getting started

Can I see the first-run tour again?

Open Settings (the ··· button), then Help, and choose Replay the first-run tour. The same screen also has a sample recording if you don't have a watch to hand.

Purchases

Restore Pro on a new device

Open Settings in the app and choose Restore Purchases. Pro is a one-time purchase handled by Apple.