Sood managed to uncover the app and has posted screenshots to Twitter.
So the Fitness app does exist on 8.2, it's just hidden until you connect an Apple Watch. Here's how the Fitness app looks once it's configured from the Apple Watch.
You can check out images of the app below. There are two tabs in the app. History and Achievements. Under the history tab you can see rings that show how much standing, exercise, and calories burned you've done. The achievements tab has a variety of graphics that will be unlocked once you reach personal goals or milestones.
Of course, the iOS app works alongside the Activities app on the Apple Watch.
The Activity app provides a simple visual snapshot of your daily activity, with three rings telling you everything you need to know. The Move ring shows how many active calories you’ve burned. The Exercise ring shows how many minutes of brisk activity you’ve completed. And the Stand ring shows how often you’ve stood up to take a break from sitting. The goal? Complete each ring every day.
The Apple Watch goes up for pre-order on April 10th ahead of its April 24th launch. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.