Timegrapher Advanced vs JC Timegrapher

Timegrapher Advanced turns your iPhone into a portable watch timing instrument—ideal for hobbyists, collectors, and professionals who want quick, clear readings at the bench or on the go. Place a mechanical watch on a piezo or on top of an external mic, press Start, and watch a live screen measure the rate (s/d), beat error (ms), and amplitude (°). Core measurements • Rate in seconds per day • Beat error in milliseconds • Amplitude in degrees (with adjustable lift angle) • Manual BPH for common beat rates • Sensitivity control plus an auto sensitivity sweep to find a clean pickup level Chart that works like a real timegrapher • Dual-line tick/tock paperstrip with progressive slope from rate • Line separation tracks beat error (near-overlap when BE is excellent) • Portrait dashboard or full-screen landscape chart with rate, BE, amp, BPH, and lift • Customizable colors, scale (±100 to ±999), and optional scale gridlines • Optional live tick waveform pip to confirm clean escapement sound Automatic sweep • Sensitivity sweep will scan through your microphone's sensitivity range to autodetect the optimal setting used for capturing data • Sensitivity sweep uses a weighted algorithm to measure signal, noise, captured data, events, and elects the best data on a scoring mechanism Calibration you control • Factory default tuned from real multi-watch sessions • Create and edit profiles against your hardware timegrapher (gold standard) • One-tap Calibrate after 20 seconds of live data to capture app raw and bake offsets Workflow with Timegrapher Logging (separate app) • Optional deep-link integration: measure an orientation (including isochronism / 24h rows) in Advanced, then Capture and Send straight into Logging Built for real use • Metrics clear to −/− when the watch is off the mic—no frozen last reading • Quiet-room friendly piezo/mic workflow with optional tick noise filtering • Diagram noise reduction for a calmer strip • Clean, focused UI Whether you’re regulating a custom build, checking a Rolex, or logging a full position set, Timegrapher Advanced gives you a clear chart and numbers you can trust—and align to the instrument you already use.

JC Timegrapher turns your iPhone into a timing machine (timegrapher) for mechanical watches. Rest your watch against the microphone and JC Timegrapher listens to the escapement to measure how well it keeps time — no extra hardware required. WHAT IT MEASURES • Rate — how many seconds per day your watch gains or loses • Beat error — how evenly the tick and tock are spaced • Amplitude — how far the balance wheel swings YOUR COLLECTION Save each watch to build a history of measurements and service records over time. Everything is stored privately on your device. HOW IT WORKS JC Timegrapher filters the microphone signal to isolate the escapement's ticks, then measures the interval between beats to derive the rate — refining the estimate continuously as it listens. FREE & PRO Measure up to three times a day for free. Upgrade to JC Timegrapher Pro — a one-time purchase — for unlimited measurements and an ad-free experience. GOOD TO KNOW JC Timegrapher is a tool for watch enthusiasts, not a professionally calibrated timing machine. Readings depend on your device's microphone and the noise around you, and may differ from a professional timegrapher. Use the results as a helpful reference, not a substitute for inspection by a qualified watchmaker. TIPS FOR A GOOD READING • Find a quiet room • Rest the watch against the microphone • Hold still for 10–30 seconds while the reading settles