Preparing a megathread about android FOSS apps - Part Five (Weather, Stores, social media and related stuff)

This thread is ONLY to talk about Weather/Meteo apps, Store apps (Like F-droid or AuroraStore) and FOSS apps about social media and related stuff, like youtube or Fediverse (Mastodon, Lemmy, etc..) apps.

For example, Newpipe is related to YouTube and a good FOSS app to watch videos.

Please, consider share your ideas and thoughts about apps on previous threads. Your opinions are really important to build final megathread. You can upvote or downvote posts so that comments gain strength and agreement between the community.

Discussion about Contacts, SMS and Dialers app is here.

Discussion about Calculators, Cameras and Calendars apps is here.

Discussion about Manager files, Recorders, Galleries and Video editors apps is here.

Discussion about Keyboards, Notes, Maps and Music Players apps is here

Little context