Calm - Calm.com can help you reduce stress and increase calm.
Journalistic - A simple, yet powerful micro journaling app
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Pixel Thoughts - 60 second meditation tool to clear your mind
Journal - Organize all your ideas