I really love Boost for reddit, I know it’s not open source but I’m sure there are open source apps that are similar enough. Does anyone know how to adjust one of these open source reddit apps to work with Lemmy? I am using an open source android app from f-droid, and it lacks some of my favorite features like tapping to collapse comment chains, customizable UI, etc.
The official Android app (Jerboa) now has support for collapsing threads, you need to click on the top border of the comment. You might need to update your version, I think the release is from yesterday or today.
Modifying a Reddit app to work with Lemmy would not be trivial, though it is possible.