Privacy policy

The data controller is Head of Science, 60 rue François 1er, 75008 Paris.

For any question about your data: [email protected].

Account information: name, email, phone number.

Activity data: lessons, students, teachers, payments and invoicing.

Credentials of the third-party accounts you connect (Superprof, WhatsApp, Discord, Google), stored encrypted.

We process this data to provide the service: lesson management, invoicing and automations. The legal basis is performance of the contract, and your consent for enabling integrations.

Sensitive credentials are encrypted in the database using AES, with the key itself protected by cryptographic salting. Data is hosted in France and access is strictly controlled.

We do not sell, rent or exchange any personal data, activity data or credentials to third parties. No data is shared with partners or advertising networks.

We use anonymised analytics (load times, error rates, feature usage) only to improve the app. They never allow a person to be identified and are not shared.

We only use authentication cookies and anonymised audience-measurement cookies. No advertising or third-party tracking cookies.

For automations, the app connects, with your authorisation, to some of your accounts (Superprof, Discord, WhatsApp, Google). These accesses are used only for the described features and are never shared.

Data about your students or contacts is managed under your responsibility. Kadrella only provides the technical tool; it is up to you to meet your legal obligations towards them.

Automatic backups are performed regularly to ensure service continuity. You can export your data at any time; keeping your own backups remains your responsibility.

You have the right to access, rectify, erase, port and object to the processing of your data. To exercise it: [email protected].

You may also lodge a complaint with the CNIL (cnil.fr).

Some features rely on artificial intelligence. Generated content (replies, summaries, analyses) is provided for guidance only and may contain errors; it is up to you to check it.