Apple system on chips and iOS

Apple system on chips
A4  45nm 1-core SGX535
   iPad, iPhone 4, iPod Touch 4th, Apple TV 2nd Gen
A5  45nm 2-core SGX543MP2
   iPad 2, iPhone 4S 2011
A5  32nm 2-core SGX543MP2
   iPad 2,4, iPod Touch 5th Gen, iPad mini, Apple TV 3rd Gen
A5X 45nm 2-core SGX543MP4
   iPad 3rd Gen
A6  32nm 2-core SGX543MP3
   iPhone 5, 5C
A6X 32nm 2-core SGX554MP4
   iPad 4th Gen
A7  28nm 2-core G6430 quad core
   iPad Air, iPhone 5S, iPad mini 2, 3, 2013
A8  20nm 2-core GX6450 quad core
   iPhone 6, iPod Touch 6th, iPad mini 4, Apple TV 4th
A8X 20nm 3-core GXA6850 octa core
   iPad Air 2 2014
A9  16nm 2-core GT7600 hexa core
   iPhone 6S, SE
A9X 16nm 2-core 7XT dodeca 12 core
   iPad Pro
A10 16nm 4-core hexa core
   iPhone 7

Apple iOS
iOS included applications for iPhone, iPod Touch, iPad, iPad mini