Privacy Policy

Heart Coherence (Cohérence cardiaque) app — last updated: 1 November 2026

In short

Heart Coherence is a guided breathing app. Your session history and settings stay on your phone: they are never sent to the publisher nor stored on a server. The app creates no account, measures no audience and collects no usage statistics. It measures nothing about you: no heart rate, no sensor, no camera.

One exception, detailed below: the banner ad, which involves an exchange with Google.

Data controller

Olivier Popiers — contact: oliviertheandroidmaker@gmail.com

Data processed

Data	Purpose	Legal basis	Where it goes
Session history: date and time, duration, rhythm, completed or interrupted	Show your history, daily goal and streak	Performance of the requested service	Stays on the device
Settings: rhythm, duration, signals, reminders, goal, display, language	Keep your preferences from one session to the next	Performance of the requested service	Stays on the device
Backup file (history and settings), only if you ask for one	Keep your data or move it to another phone	Performance of the requested service	The location you choose (a folder on the phone, your personal cloud…)
Advertising identifier and technical device data	Display the banner ad that funds the app	Consent (form shown on first launch)	Google and its advertising partners

Permissions requested

Notifications: show the current session (time left, pause, resume, stop) and the reminders you turned on. Requested only when first needed.
"Media playback" foreground service and keeping the device awake: play the sounds and voice that guide the session, including with the screen locked.
Vibration: signal breathing in and out.
Run at startup: reschedule your reminders after the phone restarts.

What the app does not do

No user account, no sign-up, no subscription, no in-app purchase.
No location.
No physiological measurement: no heart rate, sensor or camera, and no link with Health Connect or a watch.
No health data collected or transmitted.
No analytics, no crash reporting, no usage statistics.
No sale of data.

Advertising and consent

The app displays a banner served by Google AdMob on the home and history screens, never during a session nor on the end screen. On first launch, in the European Economic Area, the United Kingdom and Switzerland, a TCF-compliant consent form is presented. No ad request is made before you answer.

You can change your choice at any time from Settings › Privacy and ads. Withdrawing consent takes effect immediately.

How Google processes data: policies.google.com/technologies/partner-sites. You can also reset or delete your advertising identifier in the Android settings (Settings › Privacy › Ads).

Third-party services

Google AdMob — advertising. Privacy policy
The phone's text-to-speech engine — reads the optional voice. Only fixed texts ("Breathe in", "Breathe out", "Hold", "Session complete") are passed to it.

Storage and deletion

All app data — history and settings — is stored only in the app's private storage on your device. It is permanently deleted when you uninstall the app or clear its data from the Android settings. A backup file you created stays where you put it until you delete it.

If Android automatic backup is enabled on your device, this data may be copied to your personal Google Drive space, to which the publisher has no access.

Your rights

The General Data Protection Regulation grants you rights of access, rectification, erasure, restriction and objection, as well as the right to withdraw your consent.

In practice, since the publisher holds no data about you, these rights are exercised directly on the device: withdraw advertising consent from the app's settings, clear its data or uninstall it. For any question, write to oliviertheandroidmaker@gmail.com.

You may lodge a complaint with your national data protection authority — in France, the CNIL.

Children

Heart Coherence is not directed at children under 13 and does not knowingly collect their data.

Changes

This policy may change. The date of the last update appears at the top of the page; substantial changes will be noted in the app's release notes.