Tempochron

Privacy Policy

Last updated: July 22, 2026

Tempochron is an iPhone app for measuring the timing behavior of mechanical watches. This policy explains what the app accesses, what it stores, and what it does not collect. The short version: Tempochron analyzes audio locally, and saved watch data can sync privately through your iCloud account. Cognerva does not receive your data.

Microphone access

Tempochron uses the iPhone microphone to listen for watch ticks during measurement or raw capture recording. Live tick analysis happens on-device. Microphone audio is not uploaded to Cognerva or any third party.

Saved measurement data

If you save a session, Tempochron stores watch profiles, care details, measurement results, notes, and session history locally on your device. When you are signed in to iCloud, these saved records sync through Apple's private iCloud key-value store so they are available on your other devices using the same Apple Account. Microphone audio and raw recordings are not synced. Cognerva cannot access the contents of your private iCloud key-value data.

Raw recordings

If you choose to record raw audio for calibration or backtesting, the recording file is saved locally on your device. It is only shared when you explicitly use the app's share or export controls.

Exports and sharing

Tempochron can export CSV, JSON, text reports, and raw audio files. These exports are created on-device and passed to the standard iOS share sheet only when you request it.

No Tempochron account, no analytics, no ads

Tempochron does not require a separate sign-in and does not include advertising SDKs, analytics SDKs, or third-party tracking systems. iCloud availability is controlled by the Apple Account signed in on your device.

Network use

Tempochron does not need a network connection for measurement. If iCloud is available, watch profiles and measurement history use Apple's private iCloud key-value store for sync. If you tap links to the product website, support email, or App Store pages, those destinations are handled by iOS or your browser.

Your control

• You can delete saved watches, sessions, and recordings from inside the app.
• You can revoke microphone access at any time in iOS Settings.
• You can choose whether or not to export or share any saved data.
• You can manage iCloud access and delete Tempochron's iCloud data through Apple's iCloud settings.

Contact

Questions about this policy or Tempochron support requests can be sent to privacy@cognerva.com.