Resolutions

Devices	Portrait	Landscape
iPhone 5	640x1136 px	1136x640 px
iPhone 4/4S	640x960 px	960x640 px
iPhone & iPod Touch 1st, 2nd and 3rd Generation	320x480 px	480x320 px
Retina iPad iPad 3, iPad 4	1536x2048 px	2048x1536 px
iPad Mini	768x1024 px	1024x768 px
iPad 1st and 2nd Generation	768x1024 px	1024x768 px

Displays

Devices	PPI	Color Mode	Color Temperature
iPhone 5	326	8bit RGB	Warm
iPhone 4/4S	326	8bit RGB	Cool
iPhone & iPod Touch 1st, 2nd and 3rd Generation	163	8bit RGB	Warm
Retina iPad iPad 3, iPad 4	264	8bit RGB	Warm
iPad Mini	163	8bit RGB	Unknown
iPad 1st and 2nd Generation	132	8bit RGB	Warm

Icons

Devices	App Icon Pixels Radius	Appstore Icon Pixels Radius	Spotlight Icon Pixels Radius	Document Pixels	Tab Bar Pixels
iPhone 5	114x11420px	1024x1024180px	58x5810px	44x58	60x60
iPhone 4/4S	114x11420px	1024x1024180px	58x5810px	44x58	60x60
iPhone & iPod Touch 1st, 2nd and 3rd Generation	57x5710px	512x51290px	29x295px	22x29	30x30
Retina iPad iPad 3, iPad 4	144x14424px	1024x1024180px	100x10020px	128x128	60x60
iPad Mini	72x7212px	512x51290px	50x509px	64x64	30x30
iPad 1st and 2nd Generation	72x7212px	512x51290px	50x509px	64x64	30x30

Commonly used design elements

Devices	Height of Status Bar	Height of Nav Bar	Height of Tab Bar	Width of Tables
iPhone 5	40px	88px	98px	604px / 1100px
iPhone 4/4S	40px	88px	98px	604px / 924px
iPhone & iPod Touch 1st, 2nd and 3rd Generation	20px	44px	49px	302px / 462px
Retina iPad iPad 3, iPad 4	40px	88px	98px	dynamic
iPad Mini	20px	44px	49px	dynamic
iPad 1st and 2nd Generation	20px	44px	49px	dynamic