I work on a simple 4-7-8 breathing relaxation app for iOS: https://itunes.apple.com/us/app/essence/id768594011 https://itunes.apple.com/us/app/essence/id768594

I work on a simple 4-7-8 breathing relaxation app for iOS: https://itunes.apple.com/us/app/essence/id768594011 https://itunes.apple.com/us/app/essence/id768594011 Great for practicing and exploring — architecture, value types, test-driven development, etc.