LIVESTRONG MyQuit Coach. This $3.99 iPhone app allows you to create a customized plan to quit smoking: You can go cold turkey or cut back gradually. The app also offers tips, reminders, and progress charts. “If you have a simple program that sends five messages a day reminding you to quit, that can keep a person on track,” says smoking cessation expert Dr. Jonathan Foulds, a professor at Penn State University College of Medicine, who reviewed the MyQuit program.

