Accuracy tracking, a much bigger caliber library, and a smoother start. • Accuracy tracking — tap along with the seconds hand every few days and Chronolyze works out how many seconds a day your watch really gains or loses as you wear it. No microphone needed, so it works even with watches too quiet to measure • Compare it with the timegrapher reading: a watch that's +2 s/day on the desk but −12 on the wrist has a positional problem, not a rate problem • Set your watch? Say so, and tracking restarts from there instead of counting the correction as drift • 41 more calibers, 104 in all — Citizen, Hamilton, Grand Seiko, Tudor, Breitling and more now get the right lift angle and beat rate automatically • Choose the caliber while you add a watch, so the amplitude reading is right from the first measurement • Watches can be renamed, and keep their whole measurement history • A short welcome for first-time users: where to hold the watch, and why Chronolyze needs to listen

iCloud sync, a cleaner trace, and a lot more calibers. • iCloud sync — your watches, measurements, and positional runs now follow your Apple Account to every device. On by default; turn it off in Settings, or in iOS Settings › Apple ID › iCloud • Longines, Omega, and Rolex calibers added, so more watches get the right lift angle and beat rate automatically • A cleaner graph — stray ticks no longer scatter across the trace, and the trace keeps correcting itself as the reading settles. Swipe back through a long run to review it • More accurate amplitude on real watches • New Signal reading shows how clearly your watch is being heard, so a weak reading explains itself instead of just showing a dash • Readings now recover on their own after the watch loses contact with the microphone, and rate keeps working even when only half the beats are audible • Measure reopens on the last watch you were working with • A watch's lift angle is now set on the watch itself, so it can't be changed by accident in the middle of a measurement

Movement Health, shareable report cards, and plain-English explanations of every reading. • Movement Health — a single verdict on your watch: Healthy, Minor issues, or Needs attention, rolled up from rate, beat error, amplitude, and stability • The verdict names the reading holding it back, so you know exactly where to look • Share a report card with the trace, all four readings, and the verdict — send it to your watchmaker, post it to a forum, or save it to Photos • New "What the Numbers Mean" section in How To: what rate, beat error, amplitude, beat rate, and rate stability actually tell you, and what a healthy value looks like