Fable:
I set out this year to divest myself of as many of the more sinister corporations as possible (Amazon, Meta, etc.) and one that I deleted was Goodreads before moving over to Fable. It has a better UI, a better feed, and utilizes tools like reading streaks, visualizers, a DNF list. It's kind of just a better app so far. You can also hook up your Goodreads account to move all of your data to Fable.
Partiful:
When did we stop sending real invites to things? Was Facebook Events the beginning of the end? Probably. But now we can send fun and funky invites to people again.
Pocket Casts:
I ended my Spotify subscription this year to move over to Tidal for music, and Pocket Casts has every podcast that I need.