CrownwindSeconds a day and service log
How Crownwind compares
What sets it apartIt keeps each watch’s service history beside its daily rate, and reminds you when a service is due. None of the other apps here lists a service log.
Coming soon to the App Store, Crownwind measures how many seconds a day each mechanical watch gains or loses, by eye against your iPhone’s clock checked with Apple’s time server, and keeps its service history with a reminder when it’s due. Measuring is free for good on two watches; Plus adds every watch, the service log and position averages.
Why choose Crownwind
- A service history for every watch, with Plus. Each service with its cost, and a reminder 30 days before the next is due and on the day, from the interval you set.
- Measuring is free on two watches, for good. As many measurements and rates as you like, with charts and export.
- Nothing listens to the watch. A measurement is three taps a minute apart, each as the seconds hand reaches 12, so a noisy room doesn’t matter. A rate comes from two measurements six hours or more apart.
- No account, and your records stay yours. On your iPhone and in your own iCloud, with a weekly backup file and CSV or JSON export on every plan, even after Plus ends.
Side by side
From each app’s UK App Store page and its developer’s site on 19 October 2026. “Not listed” means we didn’t find it there, not that the app can’t do it.
| Feature | Crownwind | tickIQ | ChronoLog |
|---|---|---|---|
| Price on the UK App Store | Free for two watches; Plus £1.99 a month or £12.99 a year | 5 measurements free; PRO monthly £4.99–£9.99, yearly £29.99–£59.99, weekly £5.99; Lifetime £29.99, once | Free download; Premium £5.99, once (what’s free without it isn’t listed) |
| Service history, with reminders from your own interval | Yes, with Plus | Not listed (AI insights on when a watch may need a service, with PRO) | Not listed (alerts when a watch’s rate changes suddenly) |
| How it measures | By eye: three taps a minute apart, each as the seconds hand reaches 12. Nothing listens | By microphone, with the iPhone held near the watch | A tap, a photo of the dial, or the microphone |
| An average rate for each position | Yes, with Plus; tagging is free | Not listed | Tags for position and wear; averages by position not listed |
| Account and your records | No account; weekly backup file, CSV and JSON export on every plan | An account syncs and backs up your collection; file export not listed | No account, its listing says; CSV export, backup and restore |
| A reading in under a minute, with beat error and amplitude | No: a rate needs two measurements 6 hours or more apart | Yes, by microphone, in about 30 seconds (5 free, then PRO) | Yes, in its audio mode |
What you pay. With one or two watches, Crownwind costs nothing. For more watches, or the service log, Plus is £12.99 a year: under half of tickIQ’s cheapest yearly PRO at £29.99. ChronoLog’s Premium is £5.99 once, for every watch; a service log isn’t listed for it.
Another app may suit you better if
- you want a reading in under a minute, with beat error and amplitude: tickIQ, or ChronoLog’s audio mode
- you’d rather pay once and don’t need a service log: ChronoLog’s Premium is £5.99, once
- you want it on an iPad or a Mac: ChronoLog lists iPad, and tickIQ lists Mac
What people ask for, and what Crownwind does
Knowing how far to trust a number
A rate from a few hours of readings can swing a long way. Crownwind shows every rate with its ± range, says whether the iPhone’s clock was checked against Apple’s time server, and calls nothing under six hours a rate.
Keeping the watch away from the phone
Some owners would rather not hold a mechanical watch against a phone with magnets in it. With Crownwind the watch stays on your wrist or the table: you only look at it.
Questions
Is there a watch app that keeps a service history?
Crownwind Plus does, with a reminder before each service is due. We didn’t find a service log listed for tickIQ or ChronoLog on 19 October 2026.
Is there a watch accuracy app that doesn’t use the microphone?
Crownwind measures by eye, with taps. ChronoLog has tap and photo modes beside its audio one.
How long does Crownwind take to measure a watch?
A measurement is three taps a minute apart, so about three minutes, and a rate needs two, six hours or more apart. It doesn’t measure beat error or amplitude.
How much does Crownwind cost?
It’s coming soon to the App Store: free for two watches, and Plus is £1.99 a month or £12.99 a year, with no free trial.
Checked 19 October 2026 on the UK App Store and each developer’s own website. Crownwind isn’t on the App Store yet; its column describes the app as built. Other apps change; if something here is out of date, tell us.