Fun but crashes

Really fun little game. Crashes constantly on my 6s. Not sure if it is just me.
Dont like that friend, which are almost necessary to defeat the Yeti, have to be requested through the Game Center instead of in game. And if the game crashes, which it almost always does, you cant use that friend again for 24 hours.
The boss on level 100 is really hard, and based on the opponents in the tournament, the game looks longer and bigger than it is. I dont really believe that there are like 8 more worlds to discover, though I could be wrong.

Pleione for prez about Rise of Heroes, v2.3.0