The issue is they are pushing payment from the site owners so hard that most of the useful functionality will not be available unless we pay for the forum-branded version of the app. To me that is unacceptable.
The theme has a design which detects screen width and fixes the design to suit it. Using the forum on the phone is very useable but just not as user-friendly as Tapa is.... don't worry I do get how much it is loved. But for them to act in these ways and attepmt to extort site owners who created the market for this company in the first place, well I think you will see a 50% drop forum count on Tapa very, very fast.
Pretty sure I had a discussion with
@hunnymonster a while ago on the subject.