Family BrainPrivacy Policy
Last updated: November 9, 2026.
Family Brain (Cerveau Familial) is an Android app that helps a household organize its calendar, shopping and chores, with the help of artificial intelligence. This page explains what data the app processes, why, who helps us process it, and what your rights are.
Who is responsible for your data
Haven Global Services Ltd, a company based in the United Kingdom and the publisher of Family Brain, is the data controller. Contact: support@havengs.uk.
We apply the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018 and, for people in the European Union or the European Economic Area, the EU General Data Protection Regulation (GDPR). Users in Brazil will find a dedicated LGPD section in the Portuguese version of this policy.
Data we process
| Data | Why |
|---|---|
| Your name, email address and Google user identifier, provided by Google sign-in (Firebase Authentication) | To identify you and link your phones to the same household |
| Household content: events, shopping items, chores and members (first name, role, colour, optional WhatsApp number), plus the identifier of the person who created each item | To show and sync the shared calendar and lists between household members |
| Text you paste or dictate, and photos and PDFs you choose to analyze | To send them to the AI, which drafts events, shopping items and chores for you to review |
| Questions you ask the assistant | To answer them from your calendar and lists |
| Crash reports: phone model, Android version, error trace and an installation identifier (Firebase Crashlytics) | To find and fix defects in the app |
| Device and app integrity signals provided by Google Play Integrity (Firebase App Check) | To check that requests come from the genuine app on a genuine device, and to prevent abuse |
Event titles and notes are free text. If you add medical appointments, writing them down is entirely optional: keep it to what you need to organize the day and avoid unnecessary medical details.
In guest mode, without an account, your household data stays on your phone only. Apart from the technical checks described under Security, two things still leave it: the content you send to the AI for analysis, and crash reports.
The app shows no ads, uses no advertising tracker, and never sells or rents any data. This website sets no tracking cookies.
Legal bases
- Performance of a contract (Article 6(1)(b) UK GDPR and GDPR): your account, your household's data, AI analysis and the assistant, which are the service you ask us to provide.
- Legitimate interests (Article 6(1)(f)): crash reports, to keep the app reliable, and App Check, to protect the service and its users against abuse.
Service providers
- Google Firebase (Authentication, Cloud Firestore, Crashlytics, App Check) hosts the account and household data. The household database is located in the European Union (eur3 multi-region).
- Google Gemini, through Firebase AI Logic, analyzes the text, photos and PDFs you submit and answers the assistant. Google processes this content as our processor, to produce the result. Under its terms, Google may keep requests for a limited time to detect abuse. Family Brain itself does not keep this content: only the events, shopping items and chores you confirm are saved. See the Gemini API terms and Privacy and Security in Firebase.
- Within the app, only members of your household, invited with the code you share, can see that household's data.
International transfers
Some processing by Google may take place outside the United Kingdom and the European Economic Area, including in the United States. These transfers are covered by appropriate safeguards: the European Commission's Standard Contractual Clauses and, for data from the United Kingdom, the UK International Data Transfer Agreement or the UK Addendum to those clauses, as provided in Google's data processing terms.
Retention
- Account and household data are kept as long as your account exists, and deleted when you delete your account (see below).
- Attached PDFs and photos stay on your phone; the app only keeps a reference to them.
- Crash reports are kept for up to 90 days.
- Content sent to the AI is not kept by Family Brain; Google may keep it for a limited time as described above.
- The app opts out of Android backup, so its data on your phone is not copied into your device backups.
Deleting your data
In the app: Household › Delete my account. Your account and your household membership are deleted. If you were the last member, all household data is erased; otherwise the shared events, lists and chores stay available to the remaining members. You can also email support@havengs.uk: deletion is completed within 30 days. Details: Delete my account.
Your rights
You have the right to access, correct and erase your data, to restrict or object to its processing, and to data portability. To exercise them, email support@havengs.uk.
You may also lodge a complaint with a supervisory authority: in the United Kingdom, the Information Commissioner's Office (ico.org.uk); in the European Union, the authority of the country where you live or work, for example the CNIL in France (cnil.fr) or the AEPD in Spain (aepd.es).
Children
The app is intended for adults. Children do not have accounts. A parent may add their children's first names as household members, and events concerning them, under the parent's responsibility and in the children's interest. WhatsApp numbers are optional for every member.
Security
Traffic is encrypted (HTTPS). Server-side security rules restrict each household's data to its members, and App Check, using Google Play Integrity, verifies that requests come from the genuine app.
Changes
Any significant change to this policy will be announced in the app, and the date at the top of this page will be updated.