Well, i'm looking for something like this too. To be objective, i think it's not possible because it's online... But online phone game doesn't mean not hackable ofc. You can still do this :
1. Find the way to modify your simcash/coins and then, when you play, cut the connection (b4 u play)
2. Extremly hard to code but, there could be a bot who can do things instead of you like doing nails and metal for the nails or something like that, but finally you dont lose so much time if you play a lot, trust me
3. Find a glitch who could give you a lot of cash/gold (modifying the amount of cash on the achievements is to try )
I hope this helped you