Install Satisfaxion
iPhone: open satisfaxion.tn in Safari, tap Share, choose Add to Home Screen, then open Satisfaxion from the installed icon.
Android: open satisfaxion.tn in Chrome, open the three-dot menu, choose Install app or Add to Home Screen, then open Satisfaxion from the installed icon.
After installing, enable notifications and location when the app asks so alerts, chat, maps, and sharing work correctly.