Snapchat is by far the worst app ever developed. I like the concept but the actual development of the app is fucking garbage. It hurts my head that they haven't given a fuck about usability, optimisation or anything for that matter considering its one of the top social media platforms. It disgusts me, though Instagram has completely ripped off Snapchat in so many ways; they've done a hell of a better job at it and if people weren't so tired to SC I'm sure it would be dead by now.

Slow UI, slow gestures, probably the highest amount of bugs and crashes, shit camera because it thinks it can do a better job than the native API at rendering, painfully slow upload, stupid "featured" stories that you cannot get rid off and slow the fuck out of the app, battery drain even worse than FB, oh and not to forget that once you accidentally enable your location it's impossible to switch it off, the best you can do is hide it from everyone. I can probably go on and on with the endless issues this shit has.