Privacy Policy — Brain Preflight

Last updated: 27 October 2026 · Publisher: Amine Kara · Contact: brainpreflight@gmail.com · Version française

Brain Preflight (formerly Pre Flight) is a training app for selection aptitude tests (pilots, air traffic controllers, police, military…). It works offline and collects as little data as possible. The app does not ask for your name, e-mail, contacts or precise GPS location. Advertising providers may infer an approximate location from your IP address (section 3).

1. Data stored on your device

Your progress (scores, levels, XP, daily streak, settings, chosen program, test date, Premium status) is saved locally on your device. Deleting the app deletes this data.

2. Pseudonymous usage statistics

To understand what actually helps candidates and to improve the app, the app sends usage events to our database (Supabase, servers in the European Union, Ireland), tied to a random identifier created by the app. This identifier lets us associate activity from the same app installation. We do not connect it to your name, Apple account, RevenueCat identifier or advertising identifier. Usage analytics are enabled in version 1.7.1. These events contain:

This data is used only to measure usage, improve the app and provide score percentiles. It is not sold, not shared with advertisers, not used to track you across other apps or websites, and not combined with advertising data (section 3). Events are first kept on your device, then sent in batches when you are not actively playing, including when the app goes to the background.

3. Advertising (free version)

The free version may display ads through Google AdMob. On iOS, ad personalization is subject to the applicable Google consent choices and Apple's App Tracking Transparency permission. Refusing tracking prevents access to the advertising identifier; non-personalized or limited ads may still be shown, depending on your choices and availability. Google may collect IP addresses (including approximate location inferred from them), device identifiers, ad impressions and interactions, crash logs, performance information and other diagnostics to provide, measure and improve advertising — see the Google Privacy Policy. The Premium subscription removes all ads.

4. In-app purchases

Premium subscriptions are processed by Apple (App Store) and our subscription management provider RevenueCat, which receives a purchase receipt to validate the subscription, along with transaction details and a randomly generated RevenueCat app-user identifier. We do not send your Supabase analytics identifier to RevenueCat. We never see your payment details. See the RevenueCat Privacy Policy.

Google and RevenueCat may process data outside the European Union, including in the United States. Their privacy policies explain their retention periods, international transfers and applicable safeguards. Network requests also expose your IP address to the service provider; our analytics event and score records do not store it as an analytics field.

5. Notifications

The daily reminder is a local notification, scheduled on your device; no data leaves the device for this. You can turn it off in iOS Settings.

6. Legal basis, retention and your rights (GDPR)

Legal basis: performance of the contract for the Premium subscription (Art. 6(1)(b) GDPR), your consent where required for advertising and tracking (Google consent choices and Apple's ATT permission), and our legitimate interest in measuring app usage to improve it and in computing the percentile (Art. 6(1)(f)).

Retention: local data stays on your device for as long as the app is installed. Detailed usage events are deleted after 60 days; only aggregated statistics, which cannot be traced back to a device, are kept beyond that. Scores used for the percentile are kept for 90 days.

Your rights: you have the rights of access, rectification, erasure, objection and restriction. The analytics data is tied to a random app-installation identifier rather than your name. For any request, write to brainpreflight@gmail.com and we will tell you how we can handle it. You may also lodge a complaint with your local data-protection authority (in France, the CNIL).

7. Children

The app is aimed at selection candidates (generally 16 and older) and does not knowingly collect data from children under 13.

8. Changes

This policy may evolve with the app. The update date at the top of this page prevails.