As has been mentioned previously on this blog, this bureau is a big fan of stretching the capabilities of phones to do professional work.
In the realm of photography that usually means an advanced camera app and an excellent example of that is Moment.
From shooting RAW to split focus, motion blur to slow shutter, this app allows you to much more with your phone camera’s hardware.
All this and it still has an easy to use UI that is as complicated or as easy as you want it to be.
Get it at your phone’s nearest app store.