Each version of the IOS development notes icon and launch image size __ios

The size and use of various icon and launch image of app

ios7,8

Asset	IPhone 6 Plus (@3x)	iphone 6 and iphone 5 (@2x)	IPhone 4s (@2x)	ipad and ipad mini (@2x)	ipad 2 and ipad mini (@1x)
APP icon	180 x 180	120 x	120 x	152 x 152	76 x
App icon for the app Store	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024
Launch image	1242 x 2208 (Portrait) 2208 x 1242 (Landscape)	For IPhone 6, 750 x 1334 For IPhone 5, 640 x 1136	640 x 960	1536 x 2048 (Portrait) 2048 x 1536 (Landscape)	768 x 1024 (Portrait) 1024 x 768 (Landscape)
Spotlight Search Results icon	120 x	80 x	80 x	80 x	X 40
Settings icon	x 87	58 X	58 X	58 X	X 29

IOS 5,6

Description	Size for the IPhone 5 and ipod Touch (5th generation)	Size for high-resolution iPhone and ipod touch	Size for the IPhone and ipod Touch	Size for high-resolution IPad	Size for IPad
APP icon	114 x 114	114 x 114	X 57	144 x 144	72 x
App icon for the app Store	1024 x 1024 (recommended)	1024 x 1024 (recommended)	512 x	1024 x 1024 (recommended)	512 x
Launch image	640 x 1136	640 x 960	480 x	1536 x 2008 (Portrait) 2048 x 1496 (Landscape)	768 x 1004 (Portrait) 1024 x 748 (Landscape)
Small icon for Spotlight search results and Settings	x-ray	X-ray	x	x (Spotlight search results) x (Settings)	x (Spotlight search results) 29 x (Settings)