Well I been trying the official release for a couple of hours now, did come across one bug (assume it is) where I ended up getting multiple rewards for doing one quest which could break the game in my view. The combat is now a lot Easyer to control with you tapping the icons at the top instead of trying to tap the bad guys. Earning money is lot better then the original with u collecting money from neighbourhood which increases if you fight a lot crime in that area. Now you can delegate your heros to fight for you while you do other things. Doing this left me with nothing to do but to wait for them to finish I can't see this option being used much but one game missions makes u use the option to complete a mission maybe as you process though the game and have more to do such as keeping mult neighbourhoods happy this comes into its own.
Of course u going to ask about the iap well the game will award from time to time atoms that you can use to buy stuff and when u defeat a boss you given a 10 atoms which goes a long way to buying a super hero.
Is it worth getting? Well it's free so you not going to loose anything on it. Yet I can't help to think there really is not much to this game to get exticed about