Most of the features are fancy project explorer, but it's not really for optimizing mobile apps. The most common advice I am getting is "Use crunch compression" which is not supported by some older devices and makes the asset completely uncompressed, as well as "Power of Two" which is beaten by "Divisible by Four". Also, there's a bug where it shows build size 100gb+ when it's only ~130MB. Overall, a handy tool for beginners but if I knew all the advanced features before, I wouldn't buy it.