iPhone Timegrapher

Precision for your
mechanical watch.

A timegrapher and precision log in your pocket. Measure rate, beat error and amplitude through the microphone — and watch every beat land on a live timing diagram.

Free to download iOS 17+ Offline-first
Features 01 / 03

Everything a collector needs.

From microphone-based timing analysis to a live beat-by-beat trace, Oscillo is built for people who care about what's inside.

01

Timegrapher

Hold your watch to the microphone and read rate, beat error and amplitude the moment the DSP locks on — no bench, no hardware, no wait.

02

Timing DiagramNew

A live paper-tape trace plots every beat as it lands. The slope reads as rate, the split between lanes is beat error, and dot size tracks amplitude.

03

Precision Log

Real-world drift across days and weeks. Log the time your watch shows; Oscillo computes how many seconds per day it gains or loses on the wrist.

04

AI Identification

Snap a photo and let AI detect the brand, model and reference number. Building your collection has never been easier.

05

Your Collection

Every watch as a magazine-quality card — measurement history, health badges, trend charts and AI-stylised portraits of your photos.

06

Wearing Habits

A calendar heatmap of daily wear, streak tracking and rotation stats. Know which watches get the most wrist time.

How it works 02 / 03

Three steps to precision.

Oscillo turns your iPhone into a professional-grade timegrapher in seconds.

STEP 01

Add your watch

Take a photo and let AI identify the brand, model and specs — or enter the details by hand.

STEP 02

Measure

Rest the watch against the microphone for a live timegrapher reading, or log the time it shows to track real-world drift.

STEP 03

Track over time

Rate trends, health badges and observed drift across days. See how your watch performs on the bench — and on your wrist.

The instrument 03 / 03

A bench, a logbook, a trace.

Three complementary tools for understanding exactly how your watch keeps time.

Timegrapher

Accuracy, measured by microphone.

Professional-grade DSP analyses your watch's tick sounds to compute timing precision. Results update live as you record — the same kind of reading a watchmaker gets on a Witschi bench, anchored by one big focal figure.

  • Rate — seconds per day
  • Beat error — milliseconds
  • Amplitude — degrees of swing
Timing Diagram · New

Watch every beat land.

The redesigned tick strip plots a phosphor-fade trace of your movement, beat by beat. The slope of the trail is the rate, the gap between the two lanes is the beat error, and each dot is sized by amplitude — a working oscilloscope in your pocket.

  • Slope of the trail reads as rate
  • Lane split visualises beat error
  • Dot brightness fades with time, like a CRT
Live · Timing diagram 28 800 BPH
Slope of the trail is the rate
Lane split is the beat error
Dot size tracks amplitude
Precision Log

Drift, measured on the wrist.

The Timegrapher tells you what the movement is doing right now. The Precision Log tells you what the watch is actually doing as you wear it. Record the time it shows whenever you like — once a day, once a week — and Oscillo computes the observed rate across the whole cycle.

  • Observed rate across a measurement cycle
  • Multi-day drift analysis
  • Captures real-world wear, not just a snapshot
The precision timegrapher in your pocket — built for collectors who care about what's inside.
Get started

Ready to measure?

Download Oscillo and start tracking your collection's precision today.

Download on the App Store

MADE IN BERLIN 🐻