Is the sims freeplay v4.0 hack safe and effective?

I really want to get more money for sims freeplay but none of the time cheats work on my iphone. I have been doing them all just as the directions say but when ever i go back to sims it won't connect to the server. I have an iphone 4s and i want to download the hack v4.0 but i'm not sure if it is worth it. First, will it mess up my iphone? And is it legal?

Only the cheat from SimSlover seemed to work for me: http://g4mehacks.blogspot.com/2013/03/the-sims-freeplay-hack-by-simslover.html Try it too: D