GM Dice app
GM Dice is Games application that is open source under the GPL-2.0-only license. A dice rolling application with a special focus on the 3D20 role playing game(RPG) system.
Features:
* four configurable dice buttons (long-press to configure)
* backlog of recent dice rolls
* remembers the most commonly used dice
Supported games:
* Dungeons & Dragons (DnD)
* Neuroshima
* Monastyr
* Star Wars RPG
* Shadowrun
* and further d20 and 3d20 titles