20 Fantastic Examples of Flat UI Design In Apps - UltraLinx
Clean Flat Icon styles pioneered by Windows Metro Icons are evolving into a cool style I like to call 'Almost Flat Icons'. We also design flat icons!
Check out Cleaner Switches by Dale Humphries by Joacim Nilsson ( Wells) on CodePen and the Dribbble shot that inspired it.
Dribbble - More iOS 7 Goodness by Kushagra Agarwal