Privacy
Updated 12 October 2026.
In one sentence
This site collects NOTHING: these are static pages, with no form, no database and no Sillage server. And your logbook is never sent to us: it lives on your iPhone.
Who we are
Sillage is published by Sébastien Laus, self-employed individual (Belgian Crossroads Bank for Enterprises, no. 0869.790.387), data controller under the GDPR. For any question about your data: privacy@sillage.aero.
What stays on your phone
Your flights, your aircraft and their documents, your signatures, your expiry dates, your totals, your GPS tracks, your flight photos, your directory: all of it is stored in the app, on your device. The pages and files you import are read on the phone itself, and nothing from them is transmitted. We have no technical means of reading this data. Face ID, if you use it to sign, never leaves the device: recognition happens in the iPhone's secure element.
The Apple services the app uses
The app talks to no Sillage server. It relies on Apple services, governed by Apple's privacy policy: iCloud for the private backup of your logbook, if you enable it — the copy goes to YOUR account, we have no access to it; Maps for map backgrounds; Weather for the home-screen sky; the iPhone's location for the track recorder, which you start yourself. None of this data reaches us.
Side by side
When you hand over a flight, a signature request, a solo authorisation or an aircraft sheet, the exchange happens directly between the two phones, up close, over Wi-Fi and Bluetooth — without going through the internet or through us. You choose what leaves, the other person always accepts, and your directory only contains people you have actually exchanged with. One switch turns hand-over off in both directions.
Hosting
The pages are hosted by GitHub Pages (GitHub, Inc., United States). Like any host, it technically processes your IP address and browser headers to serve you the pages, and may log them; we have no access to that data and receive no copy of it. The “Join the test” link leads to TestFlight, at Apple, whose privacy policy then applies.
Analytics
None. No advertising tracker, no cookie, no pixel, no third-party analytics service. This site sets no cookies.
Your rights
We hold no data about you: there is nothing to access, rectify or erase on our side. If you have written to us, you can ask for that exchange to be deleted at privacy@sillage.aero. Your logbook data is on your phone, and you erase or export it yourself from the app. You may lodge a complaint with the Data Protection Authority (Belgium).
Backups, and your part
Since we do not hold your logbook, we cannot restore it for you. This page is also a warning: enable iCloud backup, export your logbook regularly, and keep those copies somewhere other than the phone. A logbook is a regulatory document you remain responsible for.