Both the panel and the personal area install as a mobile app without any store, and notify you when the club writes.
How to do it
Open clubs.addon-sport.com in the phone browser and sign in.
Accept the “Install as app” prompt or use “Add to home screen” from the browser menu (on iPhone, the share button).
Enable notifications from Messages → “Notify me on this device” (panel) or Settings → Phone notifications (personal area).
Keep in mind
Attendance works without coverage: it is saved when the connection returns.
Push notifications need browser permission; if blocked, allow them from the site settings.
Frequently asked questions
Is there an app on the App Store or Google Play?
Not needed: the web app does the same and updates itself.