I have all the latest downloaded apps and the ones I use most on my home screen and when I want to relax with the phone, I very often just pick the first app I see. I recently wanted to start engaging with the community a bit more and having the LW app “a single tap” away would have been great tricking myself into doing so. Also I feel that the browser isn’t that great to browse this particular community (for reasons explained in other comments) and got curious about why there isn’t an app for every forum, at least for attracting new users.
I think, for both iOS and Android devices, you can add a link to a web page as an ‘app’ icon.
Maybe a better focus is what you want to better “browse this particular community”, independent of whether it’s via web pages in a web browser or a (mobile device) ‘app’.