We have made an app called Echo at https://echotheapp.com, that lets you follow people in all their public social media accounts in one single feed!
Just add the person you want to follow into the Social Media Directory, wait a couple of minutes and you'll find that person by searching in Echo!
Do you have any suggestions for how we can improve Echo or want to help us make the worlds first anti social network (no login, no tracking, full privacy), contact us at post@echotheapp.com