This app was mentioned in 3 comments, with an average of 3.00 upvotes
I wrote Exploding Dice since there weren't any SR5 die rollers I liked when I started. It lets you set up a number of different die pools, keeps a history of rolls, and alerts you if you glitch. As a GM it's really handy to be able to preset a bunch of standard rolls when dealing with a big combat.
I wrote Exploding Dice for Android, so I'm partial to it. I also put together a simple die roller plugin for Teamspeak that is pretty handy.
I'm a bit biased, but I like the one I wrote: https://play.google.com/store/apps/details?id=com.dasixes.explodingdice