Privacy Policy

Effective date: July 19, 2026

Tempo is built on a simple premise: your patterns are nobody's business. This policy is short because there is very little to disclose — Tempo does not collect, transmit, sell, or share any personal data. Ever.

1. Who we are

Tempo is published by Mathieu BOLARD ("we", "us"). Contact: mathieu.bolard+tempo@gmail.com.

2. What Tempo does with your data

Everything Tempo processes stays on your iPhone. The app has no server, no user accounts, no analytics SDK, no crash-reporting service, and no third-party code. The app's networking capability is limited to Apple's own App Store services for handling purchases (see section 6).

Sessions, check-ins, decisions, journal entries — stored in a local database on your device, protected with iOS file encryption.
Health data (sleep, heart rate variability, resting heart rate, activity) — read from Apple Health, with your permission, solely to compute your daily energy forecast on the device. Tempo never writes to Apple Health, and health data is never used for marketing, advertising, or any purpose other than the forecast you see. This complies with Apple's HealthKit guidelines.
Calendar data — read from your calendars, with your permission, solely to plan transitions and schedule local reminders. Check-in records store only a one-way hash of event titles, not the titles themselves.
On-device intelligence — insight phrasing and journal analysis use Apple's on-device model. Prompts and outputs never leave the device.

3. What we collect

Nothing. Tempo's App Store privacy label is “Data Not Collected.” We cannot see your data, we hold no copy of it, and we could not hand it to anyone if asked — it exists only on your device (and in your own encrypted device backups, which you control through iOS).

4. Notifications

All reminders (check-ins, transition alerts, the evening journal nudge) are scheduled locally on your device. There is no push server and no push tokens are created.

5. Your controls

Revoke Health or Calendar access at any time in iOS Settings — Tempo keeps working with reduced features.
Export all of your data as JSON from Tempo's settings.
Erase everything with one action in Tempo's settings. Because there is no server, deletion is immediate and complete.
Deleting the app deletes all Tempo data on the device.

6. Purchases

Subscriptions and the lifetime unlock are processed entirely by Apple through your Apple Account. We receive no payment details and no personally identifying purchase information. Apple's handling of that data is described in Apple's Privacy Policy.

7. Children

Tempo is intended for adults (18+). It is not directed at children, and since no data is collected, no children's data is collected either.

8. Changes to this policy

If we ever change how Tempo handles data, we will update this page and the effective date above, and material changes will be called out in the app's release notes. The on-device principle is the product's foundation — a change away from it is not planned.

9. Contact

Questions about privacy: mathieu.bolard+tempo@gmail.com.