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I just received the following message with my iOS app submission:
Invalid Image - For iOS applications, icons included in the binary submission must be in the PNG format.
-If your application supports the iPhone device family, you must include square icons of the following dimensions: 57x57 pixels and 120x120 pixels.
-If your application supports the iPad device family, you must include square icons of the following dimensions: 72x72 pixels, 76x76 pixels and 152x152 pixels
I assume that these are the new image sizes that will be required for iOS 7. Does anyone know what the naming convention will be for the 3 iPad images? And is it necessary to still include the old image sizes as well, 114x114 and 144x144?
Thanks!
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Android recommends your starting app size to be 864×864 pixels because it will make it easier to tweak the design if need be. However, the majority of devices will use 36×36, 48×48, 72×72, or 96×96 pixels. (Note that Android app icons must be saved as PNG files, not JPEG).
As for iOS, app icons should be sized at 1024×1024 pixels. Similar to Android, the icon will be resized depending on the device and context, but Apple takes care of that for you. If you want the specifics on those sizes for visual testing or experimenting, click here. iOS app icons must be saved as PNG files.
Yes, there are new icon sizes for iOS 7. See this article: New Metrics for iOS 7 App Icons. It explains (near the bottom of the article) the sizes you need for iPhone and iPad:
If you want to target only iOS 7, you just need 76 x 76, 120 x 120 and 152 x 152 icon sizes. If you want to target also iOS 6, you’ll need 57 x 57, 72 x 72, 76 x 76, 114 x 114, 120 x 120, 144 x 144 and 152 x 152 icon sizes. Without counting Spotlight and Settings icon if you don’t want the OS to interpolate them!
As far as naming convention goes, you can name the icons anything you want as long as they are the correct size (and that high-res images use the @2x suffix). Just make sure that in your Info.plist file, you declare the names of the icons using the CFBundleIconFiles key.
This similar question on SO might also be of use to you.
EDIT 1: As per comment below, see here for more info:
EDIT 2: If you are using Xcode 5, select the target then select the General tab and you can see the dimensions of the required icons in the App Icons section. See the Apple doco about Asset Catalogs (in particular see this section) where it shows this screenshot:
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New icon image sizes that will be required for iOS 7, naming conventions are mentioned below.
For iPhone "appicon-60.png, [email protected]"
For iPad "appicon-76.png, [email protected]"
Spotlight search results icon for all devices "appicon-Small-40.png, [email protected]"
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