Horlogemeter

**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…