Encourage members to install WebApp

[Falco]

If you want an experience similar to the Play Store the best way to get that is, well, putting your site on the Play Store.

Discourse sites in Playstore

I’m afraid teaching how to create Android apps is a bit out of scope of the support we can provide here on Meta. You may want to try a simple automatic app creation service like https://www.pwabuilder.com/ which game me a zip containing a ready android project for Meta just now. Google also gave me this results for “pwa twa guide” seach: