RBKube Review
RBKube is not really a cube. It is an app. On this app, you can solve any WCA puzzle, cuboid, Minx, almost any puzzle you can imagine. You can download it here: RBKube . Pros: The app does not take long AT ALL to load. Turning is nice, and the cube/cubes are easy to rotate. All you have to do is swipe next to the puzzle. Cons: I don't have any that I can think of. The app is very nice overall.