getInstalledRelatedApps()
The getInstalledRelatedApps
API is a new web platform API that allows your website to check to see
if your app is installed on the users device.
This demo checks if a PWA served from a different location (out of scope) has been installed on Android. Only when it is installed will you see it listed below.
Installed Apps: waiting
Check out the source for this sample, or remix it on Glitch.