Cognerva Privacy Policy

Tempograph

An iPhone timegrapher for mechanical watches.

Tempograph helps you measure rate, beat error, and amplitude from watch ticks using the iPhone microphone. It is built for bench-side checks, quick comparisons across positions, and capturing samples you want to review later.

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What it does

  • Measures live rate in seconds per day with confidence guidance.
  • Shows beat error, amplitude, BPH lock, and live trace diagnostics.
  • Saves session history locally on your device.
  • Exports CSV, JSON backup, summary reports, and raw audio captures.

How to get a clean reading

  • Place the watch case or crown directly against the iPhone microphone edge.
  • Keep firm physical contact and avoid handling noise.
  • Let the reading settle for 30–60 seconds before trusting it.
  • Use Setup Check if the app is hearing bumps instead of ticks.

Privacy

Audio is processed on-device. Tempograph does not use accounts, ads, or analytics. See the full privacy policy for details.

Support

For product questions, bug reports, or App Store support requests, email [email protected].

Accuracy note

Tempograph is intended for practical screening and comparative measurement. It is not a certified replacement for professional timing equipment.