Nuit Claire · Last updated: 2026-10-22
Nuit Claire collects no personal data and has no server. Calculations (satellite passes, positions of celestial objects, true darkness) are done on your device. Only the strictly necessary information is sent to a few public services, described below.
Your location is used to compute satellite passes, night hours and the weather for your sky. It is only used while the app is open and stays stored on your device.
For the weather, a position rounded to about 1 km is sent to Open-Meteo and 7Timer!. You can also decline location access and pick a town manually: the name you type is then sent to Open-Meteo's town search service.
The app downloads public data from the following services. No identifier or personal information is sent to them; as with any internet connection, they see the request's IP address.
Each permission is only requested when you use the related feature, and you can revoke it in your device's Settings.
Your observing log (including the photos you add to it), your favourite places, your settings and your nights are stored on your device. If you turn on iCloud sync, they are also saved in your own iCloud account, managed by Apple, so you can find them on your other devices. The developer has no access to them.
When you share an observing night, the link contains the invitation details: title, place name and coordinates, date, your first name or nickname and your note. Anyone who receives the link can read them. This site's invitation page displays them directly in the browser, without saving them on a server. This site is hosted by GitHub Pages, which may keep technical connection logs.
Nuit Claire contains no advertising, no trackers and no analytics or usage statistics tools.
The app collects no data and is suitable for all ages.
If this policy changes, the new version will be published on this page with its update date.
For any question about this policy: rege.mathieu@icloud.com