an app you can install on desktop/mobile gets an icon normally to see you can easy intall (in browser Chrome)
so I think some extra code is needed
from https://youtu.be/fyGhOlSzJDI
found this in this webpage
<!-- Chrome for Android web app tags -->
<meta name="mobile-web-app-capable" content="yes" />
https://leestrainer.nl/themapakketseizoenensprookjes/feest/jarig/domino/index.html
but when doing it with https://zimjs.com/groovity it isn't yet there.
do you know how to make it possible?
Thanks