Bottom right and left page curl that shows shortcuts when swiped? My friend and I both have Samsung Galaxy Rugby Pro (SGH-I547) on Android 4.1.2, both fully updated OS and software. 

His phone has a bottom right and left page curl effect accessed with a swipe from bottom left or right corners. This will reveal recent apps, swipe again and it reveals favorites, swipe again and it reveals tools.

I can't for the life of me figure out what app or setting makes this happen. I can't even find an image on Google to show you what I mean.
I figured it out. Omni Swipe gave me most of the options that I was referring to.

The page curl effect comes with an app called Clean Master. It has the option to have the page curl swipe with tools, favorites and recent apps.