Transferred from: http://blog.csdn.net/chonbj/article/details/25133247
Like I can't remember iOS app icon pixel size developers a few, I often need to query different devices on the application size, in order to facilitate their own, convenient for everyone, I made the following chart for your reference.
What is the pixel size of IPhone, Ipodtouch, and general-purpose app icons?
iphone and Ipodtouch apps need to apply all the icon pixels in general, and you might wonder why iphone apps need an ipad app icon because an iphone app can also run on ipad.
Instead, ipad apps don't run on the iphone, so the ipad app has its own icon pixels.
Required Icons:
AppStore icon: 1024x1024pixels
iphone home Screen icons: 57x57, 114x114 (retina) pixels
ipad Home Screen icons: 72x72, 144x144 (retina) pixels
Optional icons:
IPhone, Ipadsettings, iphonespotlightsearchresults:29x29, 58x58 (retina) pixels
ipadspotlightsearchresults:50x50, 100x100 (retina) pixels
What icons are needed for ipad apps?
Since apps that only apply to ipad can't run on iphone, you don't need that many icons.
Desired icon:
AppStore icon: 1024x1024pixels
ipad Home Screen icons: 72x72, 144x144 (retina) pixels
Optional icons:
ipadsettings:29x29and58x58 (retina) pixels
ipadspotlightsearchresults:50x50and100x100 (retina) pixels,
Two. Set the icon on your app
Click the project name-info.plist file to add a label
All icon size specifications for IOS app