About iOS program settings splash screen and icon device is currently mainly: iphone devices and ipad devices
iphone splash screen and icon settings
The current iphone resolution is: 320X480, 640x960, 640x1136.
Default.png 320X480 iPhone 320X480 resolution screen defaults to start the picture.
Default@2x.png 640x960 iPhone 640x960 resolution screen defaults to start the picture.
Default-568h@2x.png 640x1136 iPhone 640x1136 resolution screen defaults to start the picture.
--------------------------------------------------------------------------------------
Icon.png 57x57 10px user App Store and iphone/ipod display required
Icon@2x.png 114x114 20px HD mode
Icon_120.png 120X120 20px for IPhone5 HD display
Icon-small.png 29x29 20px for settings and Spotlight search
Icon-Small@2x.png 58x58 8px for icon-small.png HD mode
Icon_80.png 80x80 8px for IPhone5 in Spotlight search
---------------------------------------------------------------------------------------
ipad splash screen and icon settings
Default-portrait.png 768x1024 ipad Dedicated vertical splash screen
Default-landscape.png 768x1024 ipad Dedicated horizontal launch screen
Default-portraitupsidedown.png 768x1024 ipad Dedicated vertical splash screen (home button on screen)
Default-landscapeleft.png 768x1024 ipad Dedicated vertical splash screen (home button on the left side of the screen)
Default-landscaperight.png 768x1024 ipad Dedicated vertical splash screen (home button on the right side of the screen)
--------------------------------------------------------------------------------------------
Icon-72.png 72x72 20px for display required on ipad desktop
Icon-50.png 50X50 20px for Spotlight search in the ipad
Icon-29.png 29x29 10px Settings page