Was $3.99 - Discounted today only (Birthday Sale)
This App has (simple) graphics, but is my 4 years old favorite app (There is a "lite" version with only two rooms to explore).
"My PlayHome is the original and best dolls house app. Massively interactive, your kids can explore and use everything in the house. The characters eat, sleep, shower, brush their teeth and more. Want the room to be darker? Close the drapes! Fancy a change in music? Pop a different CD into the stereo!"