ProductiveApp.io - Productive is a habit tracking application.
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Streaks - The to-do list that helps you form good habits.
Calm - Calm.com can help you reduce stress and increase calm.
Strides - Track all your goals & habits in one place, with flexible reminders to hold yourself...
Pacifica - Stress and anxiety relief through beautiful CBT tools