Platform: iOS; Free

The San Francisco Way app is a great place to turn to if you're new to the city, or if you're one of those people who doesn't do any exploring until friends from out of town come to visit. The app lists a little bit of everything going on in the city (like the Swiss Army knife of apps). Want lists of markets near you? Parking? Street eats? This app has it all with more than 40+ categories to choose from. The best part? It's totally free.