Calm - Calm.com can help you reduce stress and increase calm.
Productivity.so - Shortcuts and hacks for your favorite tools
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Productivity Planner - This package contains a selection of 10 templates that have helped me increase my productivity over the past 5 years.
Meditation Studio - Curated collections of guided meditations
Productivity Tools by Dropbox - Scan, share, collaborate & provide feedback on your ideas