ui-designs
#Best Resources for App UI
Best sites
Other Sites
Icons
Best color schemes Blog
Color Wheel
#App design UI template
#Latest IOS APP Colors
#Some important Tips for UI http://www.shopifyandyou.com/blogs/news/7210858-customizing-your-shopify-theme-the-ultimate-list-of-resources-references-tools
1. 1080px x 1920px --> 480dpi / 480 ppi