Twitterific is at the time of this writing the only “social media” app left on my phone. And, because I am also very careful, who I follow on Twitter, my feed is usually very curated, so that I can go through the whole (chronological) feed once a day and mostly find some interesting stuff to read or watch or laugh about.
My other source of online reading material has returned to RSS. I had a huge list of feeds I followed back in the days of Google Reader. Now that NetNewsWire is being actively developed again (it also has an iOS app, that syncs via iCloud), this is where I do most of my electronic reading these days.