This looks really fun and interesting. Tinybop, makers of educational apps for kids, just released Skyscrapers, a new iOS game that teaches you some of the ins and outs of how a skyscraper works. It's not quite SimTower for iOS (although somebody should really get on that), but it's still a great way to understand what goes into keeping a skyscraper a happy place for all its tenants. Think of this as a beginner's level intro to skyscrapers with gorgeous graphics.
This reminds me of Kate Ascher's book The Heights: Anatomy of a Skyscraper which is a lovely and very in-depth look at how skyscrapers are built, managed, maintained, and kept in operation.