A photo-sharing app called Instagram appears in the App Store
By the fall of 2010, Kevin Systrom and Mike Krieger had already scrapped one app. Burbn, their San Francisco startup's mobile check-in service, had failed to catch on against Foursquare, but the one feature users kept coming back to was photo-sharing. On October 6, 2010, the two co-founders released the stripped-down result on Apple's App Store under a new name: Instagram, a portmanteau of instant camera and telegram. The app let users shoot a photo, frame it in a square, and send it out…
