Notey.

With Notey, an app backed by scientific research and machine learning, you can write down your daily thoughts and be mindful about your self-care practice. You can also practice meditation to boost your reflection journey.
Want something short and stress-free? Your can simply create post-it-note-like random "Bubble" to keep track of happiness and worries, and blast them with double tap, anytime, anywhere.

Notey is created by Psykeep, inc, a Silicon Valley based Startup aiming to improve mental health awareness with psychology research and machine learning.