Its an app name. You can download it on googleplay I hope you try it its an excellent app. But sure there will more sophisticated app and program. I also tried some other app. But it always bring me back to sketchbook autodesk. Probably I am much more familiar with this. than other. I sorry If I couldn't reply more. Concerning with my RC. The next week of splinterlands art contest have already started. xD
I wish the hive blooging have a free chat so that we don't need to thing about our rc.