I made a quick video about #phanpy (by @cheeaun)
I’m sorry it is kinda scattershot, but you can see some cool features like catch-up, which is really unique among masto clients, as well as the various layouts, the boost carousel, and threaded replies.
I don’t mention this in the video, but in Safari on iPhone, if you click share and “Add to Home Screen”, it will create an icon that lets you open phanpy like an app (so no extra extra extraneous browser UI elements).