Privacy policy

Updated on November 1, 2026

This translation is provided for convenience. In case of any difference, the French version prevails.

Cœur de l'Univers is an app for guidance, relaxation and support for your nights. This page explains which data it uses, why, and how you stay in control of it.

Who is responsible for your data

The publisher of the Cœur de l'Univers (CELEST) app is the data controller. Contact for any question about your data: celestinfinite@gmail.com.

The data the app uses

Your account: email address, display name, sign-in method (for example Google), language and preferences.
Your Casket: the Guidances you keep, your reflections, feelings, dreams and nights, and the photos you choose to add. This content is private: only you can see it. Photos are deleted when you remove them from the Casket and, at the latest, when you delete your account: they are never kept beyond that.
Your subscription: the status of your trial or Premium subscription, checked with Google Play (or the App Store). We never see or keep your bank card number.
Technical usage measurements (screens viewed, features used, incidents) meant to improve the app. They never contain the text of your notes or your photos. If you are signed in, they are linked to your account. They are kept for 6 months, then deleted automatically.
Notifications: if you turn them on, a technical identifier of your phone is used to send your reminders.
Messages you send from the app with “Contact us”: your message, the reply address you choose to give (optional), the app version, your phone model, the Android or iOS version and the language. Nothing else is attached: never the content of your Casket, your Guidances or your nights.

Why we use this data

To run the app: sign you in, find your Casket again, personalise Guidances.
To manage your 7-day free trial and your subscription.
To show ads in the free version, with your consent where the law requires it.
To keep the service secure and fix errors.
To answer your messages and improve the app thanks to your feedback.

Advertising

The free version shows ads (Google AdMob). To do this, Google may receive your phone's advertising identifier, your IP address (which can be used to estimate a general location, not your precise location) and technical usage data. You can manage your choices in the app, under “Privacy preferences”, and reset or delete the advertising identifier in your phone settings. The 7-day trial and the Premium subscription show no ads.

Where your data is stored

The app's data is hosted by Supabase, in the European Union (Ireland region). Payments are processed by Google Play or the App Store; advertising goes through Google services. These providers have their own privacy policies. Messages from the contact form go through an email delivery service (Resend), which passes them on to our receiving address and does not use them for its own purposes.

For how long

Your data is kept as long as your account exists. If you delete your account, it is erased (see the “Account deletion” page), except for items we are legally required to keep, for example purchase receipts.

Usage measurements and messages sent with the contact form are kept for 6 months, then deleted automatically. Those linked to an account are also deleted with that account. Measurements collected without signing in are not linked to any account. Casket photos are never kept beyond your account.

Your rights

You can at any time access your data, correct it, download it, object to certain uses, and ask for its deletion or for the processing to be restricted.

In the app: Settings › Privacy and data › “Download my data” and “Delete my account”.
By email: celestinfinite@gmail.com. We reply within one month at most.
You can also contact the data protection authority of your country (in France: the CNIL, cnil.fr).

This website

The coeurdelunivers.com website sets no advertising cookies and uses no tracking tool. It is hosted by Netlify. The presentation videos are loaded from our Supabase servers: as on any website, your IP address is then technically visible to these hosts, without us using it to identify you.

If you click a link to Instagram, you leave this site: Instagram's policy applies.

Changes

This policy may change. The date of the last update appears at the top of the page; in case of a significant change, we will tell you in the app.