Photo-sharing upstart Vero just became the most popular app in Apple’s App Store, Mashable reports. “Perhaps the app’s biggest differentiator from current social networks is that it sorts posts in reverse-chronological feed, not algorithmically,” it writes. “It also distinguishes connections based on their relationship to you.” In other words, “You can designate people as close friends, friends, acquaintances, or followers and opt to share posts specifically with these groups.”