Facebook. Twitter. Pinterest. Stumbleupon. Whatsapp. Email. Advertisement. The best camera is the one you have on you, but that doesn’t mean the default software is going to help you get the best pictures.
Practically every smartphone comes with a built-in camera app, but these apps are generally created by the device's manufacturer. And let's face it, manufacturers are hardware companies first and foremost, so they don't always produce the best software.