Chronograde vs Horlogemeter

Know your watches beyond a single reading. Chronograde brings together microphone-based estimates, manual drift records and your collection history. FREE TO START Keep an unlimited watch collection with photos and details. Use the Timegrapher for acoustic rate and beat-error estimates, save up to 10 manual readings, and complete one guided Regulation Coach run. iCloud sync and JSON backup remain free. UNDERSTAND THE READINGS Acoustic results depend on the watch, microphone placement and background noise. Manual readings compare displayed watch time with a network reference or the labeled device-clock fallback; timing and reference errors affect the result. Estimates do not replace professional testing. COMPARE SESSIONS (Chronograde Pro) Compare two manual sessions by observed daily rate, reading count, elapsed coverage and recorded positions. Preview and share a comparison PDF. A difference does not prove a service effect. WEAR & SERVICE (Chronograde Pro) See distinct logged days per watch over 30, 90 or 365 days. Days without entries mean not logged. Keep wear and service records with provider, cost and notes. PRIVATE REPORTS (Chronograde Pro) Choose watches, history and a date range, then preview and share a PDF. Serial numbers, notes, amounts and photos are excluded by default. A report is not a backup, appraisal or certification. MORE HISTORY (Chronograde Pro) Record unlimited manual readings and sessions, explore rates by position and repeat guided Regulation Coach runs. REFERENCE & EXPORT (Chronograde Pro) Use a large reference clock with available network time correction. Import watches from CSV and export records to CSV or Excel. MEMBERSHIP Choose monthly, annual or one-time Lifetime access. The free tier may display advertising with your consent; active Pro access removes ads. Optional paid themes are separate purchases. --- Subscription details: Chronograde Pro offers monthly or annual subscriptions. Eligible customers can start with a 14-day free trial. Renews automatically until cancelled in Settings > Apple ID > Subscriptions at least 24 hours before the next billing date. Payment is charged to your Apple ID. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://mwsupplylimited.github.io/chronograde/privacy.html

**Measure the accuracy of your mechanical watch with your iPhone.** Horlogemeter turns your iPhone into a powerful mechanical watch timegrapher. Using the microphone to listen to your watch movement, Horlogemeter analyzes its acoustic signal and provides detailed timing measurements in seconds. Whether you're checking a newly serviced watch, comparing different movements, or simply curious about how your watch is performing, Horlogemeter gives you the information you need. **Measure your watch** • Rate and daily accuracy • Beat frequency (BPH/VPH) • Beat error • Amplitude • Timing stability **A timegrapher in your pocket** Place your iPhone over the watch crystal and let Horlogemeter listen to the movement. No dedicated timegrapher is required. Horlogemeter is designed for mechanical and automatic watches and can help you monitor their performance wherever you are. **Understand your results** Go beyond a simple accuracy number. Horlogemeter analyzes your measurement and helps you understand what the results mean for your mechanical watch. **Keep track of your watches** Save your measurements and build a history for each watch. Compare results over time and monitor changes in your watch's performance. **Made for watch enthusiasts** Whether you are a collector, enthusiast, or simply want to know how accurately your mechanical watch is running, Horlogemeter puts watch timing analysis in your pocket. **How it works** 1. Place your mechanical watch as instructed. 2. Position your iPhone over the watch crystal. 3. Start the measurement. 4. Let Horlogemeter analyze the movement. 5. Review your rate, amplitude, beat error and other timing data. Discover how your mechanical watch is really performing. **Horlogemeter — Measure. Analyze. Understand your watch.**