I've downloaded several looking for the best one, and this is by far it. I still had to rate 3 stars because of one problem though. When you change the probability of landing on a certain option- it will change ones that you have already decided. I don't know if that made sense- here. Say you made 4 options- 1,2,3, and 4. I want there to be a 50% chance of landing on 1, and a 30% chance to land on 2. That would leave 20% to divide up 3 and 4. Making it 50 for 1, 30 for 2, 10 for 3, and 10 for 4. However, when I make #1 50%, instead of it locking in that I want 1 to be 50, it makes its slice smaller when I increase a different one. so when I bump up 2 to 30%, it shrinks down 1 from 50% to like 45%. Not a huge problem- but it becomes more of a problem when u have more options and want each chance to be exact. Sorry for the really long review- however fixing that to where once you decide the probability of one it locks in, would be nice. And you should have a button to unlock and lock certain ones.