Fit Star Yoga
Free (in-app purchases) FitStar Inc. fitstar.com
FitStar’s Watch integration lets you control yoga sessions from your wrist – it shows pose names, static pose images (to make sure you’re doing it right), and counts down the time you need to hold a pose to get the benefit from it. At the end of a session you can feed back its difficulty to your iPhone. The app also works as a remote to start and stop yoga sessions being viewed on an Apple TV via AirPlay.