The fun iPhone game, which tests memory recall, runs on the Apple Watch, but it's far more pared-down, less challenging and a bit of a letdown. But it's free if you already bought the great game on your phone.
Apple's more exercise-targeted app lets you track runs, walks, cycling, elliptical, rower or stair-stepper workouts, by using heart rate and also your phone's GPS for outdoor activity. You can set goals for distance, calorie burn or time.
The onboard Music app works like a remote to access all the music on the iPhone, and also controls any third-party music apps you may have playing. You can store playlists on the Watch, too -- up to 2GB of music. You need to use Bluetooth headphones with Apple Watch if you're using it as an iPod.
Apple's daily fitness app runs on the Apple Watch and the iPhone. It tracks active exercise, motion and time spent standing. Three daily goals may sound daunting, but it's a clever way to inspire progress, and the colorful design is elegant.