If you do decide to download it, use my referral code BF76057.
You'll get a free 4* monster which will help out a ton at the beginning of the game (5* is max you can get). My original 4* from using someone else's referral code is max level and has saved my a** numerous times.
Check it out if you're into this kind of game. Feel free to add me as well. User ID is nmondor