Okay so I saw a comment in http://www.supercheats.com/guides/the-sims-freeplay/sources-of-income-simoleons#
CHEAT ALERT This works every time!. On my Galaxy S3 - android and as far as I know the iphone app can do it too I get 10,000 ( i think it has to do with town worth because the first few times I did it I got 5000 and now at a town worth of 389,063, I get 10,000 and every sim is inspired. Open your game. EXIT it completely. Turn off your wifi mobiledata packetdata in mobile settings. Open game. You will get an error. - No connection.. cancel/retry - click nothing Put your game in stand-by- PRESS HOME. do not exit the game this time. In settings, turn your date back ONE YEAR. Open the game again. When you see the error this time, click retry.
It really works!!!!!