A Beezer app is a Progressive Web App (PWA).
A Progressive Web App will work across platforms and devices including mobile and desktop.
A Progressive Web App gives you the ability to install as an app onto your user's homescreen.
Progressive Web Apps use a Service Worker which allows your app to run in the background.
You can also send Push Notifications* to the app which means that user's will see notification messages in their mobile device's home screen even when they are not using the app.
*Not yet available on iOS