Camera Awesome (Free);
iphone’s camera is undoubtedly the best, but if you believe in manually changing the settings, instal Camera Awesome. This app launches the camera, but at the same time offers various options such as image stabilisation, slow bust, fast bust, interval, timer, tap expose, tap focus, etc. There is also an option to enable automatic post processing that contains a number of options. Used for both stills and videos, users can also upload the captured content directly on Facebook, Youtube, Twitter, Photobucket, etc.