Free time? Super easy exp
Just after tapping on an adult sim have you adult sim kick the trash can over a few hundre times and you'll be flying through the ranks the only down side to this is your sim will stink after a few kicks but you are still earning really kick exp. Another way is to create a patch of six gardens and have your sims garden carrots you will be earning about 140 simuolons per five mins if you have a dog or cat or both in the same area then you will earn most likely at least 200-300 per five mins.
More tricks, tips and cheats for this game are right here - The Sims FreePlay cheats
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