Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Worn accuracy you can trust The rate measured from your photo readings now comes with an error bar, so you can see how settled the number really is. It shrugs off a misread hand instead of being dragged off course by one, spots when a watch has stopped or been re-set, and holds its tongue until your photos are far enough apart to mean anything. A better camera for the dial Closer focus, tap to focus, and a single crisp exposure that freezes the second hand. Photos come out the right way up however you were holding the phone. Bench versus wrist Where both numbers exist, a watch's page now shows how differently it runs on the wrist from how it runs on the timing bench. The forum Photos appear in thread lists instead of a bare link, and a new bell collects replies to threads you started or joined. Fully translated Every screen is now available in German, French, Italian, Japanese and Simplified Chinese — the explanations too, not just the buttons. Also in this release • Insurance reports print on A4 outside the US • Longer battery life while measuring, and on overnight runs • The overnight test now tells you if something interrupted it • Photo readings take up far less space • A reminder when it's time for the next photo reading • VoiceOver can set fractional seconds in the dial editor • More reliable purchases and restores
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About
Rest your iPhone against your watch and watch its rate appear live — like a bench timegrapher, without the bench. MEASURE LIKE A WATCHMAKER • Daily rate (s/day) and beat error in about 30 seconds, with a live scrolling beat trace • Amplitude from your caliber’s true lift angle (Pro) • Guided position tests with a chronometer-style report (Pro) • Overnight stability runs — drift across the power reserve (Pro) • Magnetism check using your iPhone’s sensors (Pro) MEASURE LIFE ON THE WRIST A bench reading tells you how a watch runs on a table. Isochron’s photo method tells you how it runs on your wrist: photograph the dial, we timestamp it against atomic time, and the drift between photos is your real worn accuracy. YOUR COLLECTION, DOCUMENTED Every watch with photos, specs, serials, full accuracy history, service records, warranty reminders, wear rotation — and a polished PDF insurance report (Pro). COMPARE WITH EVERY OTHER OWNER Your reading lands on the live distribution for your exact model and movement. Better than 84% of Submariner owners? Now you know. Then talk shop in caliber-specific forum boards. FAIR PRICING, NO SUBSCRIPTION Measuring, your collection, the photo method, and the community are free — forever. The bench instruments are one single purchase. No subscription, ever. PRIVATE BY DESIGN Audio is analyzed on-device and never uploaded. No ads, no tracking. IAP — Isochron Pro: “Isochron Pro” / “Amplitude, position tests, overnight runs, magnetism check, and the insurance report. One purchase, yours forever.”
What's new · 1.4
Worn accuracy you can trust The rate measured from your photo readings now comes with an error bar, so you can see how settled the number really is. It shrugs off a misread hand instead of being dragged off course by one, spots when a watch has stopped or been re-set, and holds its tongue until your photos are far enough apart to mean anything. A better camera for the dial Closer focus, tap to focus, and a single crisp exposure that freezes the second hand. Photos come out the right way up however you were holding the phone. Bench versus wrist Where both numbers exist, a watch's page now shows how differently it runs on the wrist from how it runs on the timing bench. The forum Photos appear in thread lists instead of a bare link, and a new bell collects replies to threads you started or joined. Fully translated Every screen is now available in German, French, Italian, Japanese and Simplified Chinese — the explanations too, not just the buttons. Also in this release • Insurance reports print on A4 outside the US • Longer battery life while measuring, and on overnight runs • The overnight test now tells you if something interrupted it • Photo readings take up far less space • A reminder when it's time for the next photo reading • VoiceOver can set fractional seconds in the dial editor • More reliable purchases and restores
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