Precision Watch: Accuracy
iOS app by Louis Marion. Utilities · Louis Marion
- Store rating
- 4.5 / 5
- Store rating count
- 2
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 2.2.1
- Listing last refreshed
- 2026-09-12
View the original store listing
Store description excerpt
Is your mechanical watch running fast or slow? Find out in minutes. Precision Watch measures your watch's true daily accuracy by comparing it to atomic time — no expensive timegrapher and no trip to the watchmaker. Start a measurement, come back later, enter what your watch reads, and see exactly how many seconds per day your watch gains or loses. WHY PRECISION WATCH • Atomic-accurate — every measurement is referenced against an atomic clock • No microphone guesswork — a reliable, repeatable method that actually works • Track every watch — build your collection and follow each one's rate over time • Fast & beautiful — a clean, native experience made for watch lovers • Private — everything stays on your device, no account required HOW IT WORKS 1. Sync your watch to the on-screen atomic clock 2. Wait — from a few minutes to several hours, your choice 3. Enter what your watch reads now 4. Get your precise +/- seconds-per-day result Know when your watch truly needs a service — and when it doesn't. Stop guessing and start measuring. Precision Watch Pro unlocks unlimited saved measurements and your full watch collection. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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