Daily Yoga - 50+ yoga classes, 400+ workout poses, w/ HD video and music
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Namasketch - Mini yoga session for beginners, told in doodles.
Calm - Calm.com can help you reduce stress and increase calm.
Yoga Studio - Hours of great yoga videos or build your own
Pacifica - Stress and anxiety relief through beautiful CBT tools