

Lemmy’s API doesn’t have a direct way to do that, unfortunately.
Tesseract (web-based lemmy app) used to have that before I took it out. After the ranking metrics were removed from the API, it was hard to sort them other than by new/old or by score. When you have a mix of active and inactive communities, it didn’t work great without the ranking metrics being there.
You can still group communities, but only for organizing them or (in the dev branch/next version) applying filter policies to communities in that group.
I may revisit the idea if I can figure out a better way to generate/sort the custom feeds.
Seems more like a genuine feature to me.
I don’t know how many requests I’ve seen for Lemmy apps to be able to swipe between posts in the feed.
Seems that’s basically what they’re doing here.
But also, gesture navigation is terrible, I hate it, and always turn on 3-button navigation when I get a new phone anyway.