Rootd - Anxiety and panic attack relief for iOS & Android
FlowVR - Virtual reality app with highly effective guided meditations
Calm - Calm.com can help you reduce stress and increase calm.
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Timeless | Meditation - Personal practice meditation timer with guided instruction and multi-day courses.
One-Minute Anxiety Helper - Digital coach to help in moments of stress and anxiety