Headspace - Meditation made simple. Brilliant things happen in calm minds.
EarMaster - Professional software for ear training and practical music theory on Windows and Mac.
Calm - Calm.com can help you reduce stress and increase calm.
Meludia - Listening exercises and to sharpen your ear and music theory skills
Medito - 100% Free Meditation App that will improve your Mental wellbeing with the help of Guided Meditations, Breathing Exercises, Mindfulness Practices, Relaxing Sounds, and more.
LenMus - LenMus is a free program for learning music.