Lemon Labs has created a handy guide on how to make great iOS app designs.
The infographic contains a comprehensive list of elements to look out for, such as screen and icon sizing.
See the infographic below for more tips.
Click on image to enlarge
Click on image to enlarge
Click on image to enlarge
Click on image to enlarge
Click on image to enlarge
Click on image to enlarge
[via Funky Space Monkey]