Tempochron: Watch Timegrapher

Measure mechanical watch rate, beat error, and timing stability with your iPhone microphone. Pro unlocks exports, diagnostics, and multi-position reports.

Tempochron turns your iPhone into a practical timing companion for mechanical watches.

Use the microphone to listen to watch ticks, estimate rate, beat error, and timing stability, then save sessions by watch for service notes, regulation checks, and before/after comparisons.

Features:

• Live rate and beat error measurement
• Automatic BPH detection for common mechanical movements
• Watch profiles with saved session history
• Multi-position timing sessions for dial-up, dial-down, crown-up, crown-down, crown-left, and crown-right checks
• Signal scope and advanced diagnostics for evaluating recording quality
• CSV, JSON, PDF, and raw audio export tools with Tempograph Pro

Tempochron is designed as a field screening tool, not a certified timing machine. Results depend on microphone contact, background noise, watch position, mainspring state, and movement condition. Use proper bench equipment for final regulation decisions.