WatchScope turns your smartphone microphone into a timegrapher. Listen to the balance wheel beat, calculate rate, amplitude and beat error in real time, and archive every measurement alongside your collection — to COSC tolerances.
Open WatchScope, rest the watch on your phone's microphone, and within seconds you'll see the balance wheel beating live. Five positions, twenty-four hours, and WatchScope compares the rate to the ISO 3159 tolerances: −4 ÷ +6 s/d, Δmax 10 s/d.
Rate and beat error are plotted in real time, sample after sample. The same reading you'd get from a Witschi bench timegrapher, on your phone screen.
Three KPIs in lockstep. Each number with its own unit, colour-coded thresholds, and — when the watch is linked to a known calibre — the manufacturer's declared tolerance.
The audio engine identifies the balance wheel frequency on its own. Or pick the calibre from the built-in catalogue — Rolex, Omega, ETA, Sellita, Seiko, Miyota — and BPH and Lift Angle fill themselves in.
Every watch has its own dossier: brand, model, reference, calibre, serial number, year, condition, box and papers status, purchase price and current market value, photos, notes. Every measurement — Quick Tests, COSC, service interventions — is archived alongside the piece, building over time its precision history.
Technical specs, condition, full set (box and papers), value, personal notes and service log: all on a single page, organised like a dealer's logbook.
Find a timepiece by brand, model or reference from the search bar; filter by condition (Mint) or by full set (Complete · Watch Only); sort by date, brand or precision. Your collection stays navigable even at forty pieces.
Total estimated value, breakdown by brand, full-set completeness, top performer by average rate. Your collection, measured.
At the end of the test, the COSC verdict appears in the watch's detail page: pass or fail, position by position, second by second. A summary as clear as a jeweller's showcase — ready to consult, archive, share.
Rate, amplitude and beat error for each of the five canonical positions (CH, FH, 9H, 3H, 6H). Out-of-tolerance rows are tinged gold: the problem stands out at first glance.
Average daily rate within the −4 ÷ +6 s/d range, maximum variation between positions below 10 s/d, beat error contained. Three rules, three ticks: the watch either meets the COSC standard or it doesn't.
Every test joins the watch's dossier. See whether it's drifting over time, approaching its service window, or whether the rate is still the one it had walking out of the manufacture.
"I caught myself measuring every watch before putting it on in the morning. WatchScope changed the way I own time."Alessandro V. · Collector · Milan
You own more than five mechanical timepieces. Every watch has its own story, and you want every story to have its measurement too — kept in digital form, alongside the original box and papers.
BPH, amplitude and beat error are your dictionary. You want a Witschi in your pocket and a digital archive where you can see how your Submariner drifts over time, before and after every service, calibre by calibre.
You inherited a Calatrava, a Datejust or a Speedmaster. You want to understand what you really own — the calibre, the year, the condition of its rate — and pass the collection on, dossier by dossier, with the dignity it deserves.
Everything you might want to know before trusting us with the measurement of your timepieces.
Download WatchScope on Android, place your first watch on the microphone, and in under a minute you'll have the first measurement of your collection.