Created IFTTT recipe for this subreddit. So all great Shots On Android will be applied as wallpapers :) https://ifttt.com/recipes/304719-set-my-android-wallpaper-to-the-new-hot-post-in-r-shotonandroid (edit: updated link)
https://play.google.com/store/apps/details?id=com.hecorat.camera
Try that, someone in /r/android said it works for the S6 and it is awesome on my Nexus 6. The live readout of White Balance, ISO, and Shutter speed are awesome
It's a photo filter app. In addition to the normal photo editing tools you'd expect, it does really well with film emulation.