Application Processor

The application processor is the technical term given to a processor of an iDevice. There have been many incarnations of processors for Apple's mobile devices.

Features
Each revision is an ARM SoC tailored to the device's needs. All of Apple's SoC platforms have public key encryption accelerators, hardware crypto and so on. Prior to A6, the CPU cores were generic ARM designs, and prior to A11, the GPU cores were proprietary PowerVR graphics designs.

S5L8930 Apple A4

 * iPad
 * iPhone 4
 * iPod touch (4th generation)
 * Apple TV (2nd generation)

S5L8940 Apple A5 (APL0498)

 * iPad 2 (except iPad2,4)
 * iPhone 4S

S5L8942 Apple A5 (APL2498)

 * Apple TV (3rd generation) (AppleTV3,1)
 * iPad 2 (iPad2,4)
 * iPod touch (5th generation)
 * iPad mini

S5L8947 Apple A5 (APL7498)

 * Apple TV (3rd generation) (AppleTV3,2)

S5L8945 Apple A5X

 * iPad (3rd generation)

S5L8950 Apple A6

 * iPhone 5
 * iPhone 5c

S5L8955 Apple A6X

 * iPad (4th generation)

S5L8960 Apple A7 (APL0698)

 * iPhone 5s
 * iPad mini 2
 * iPad mini 3

S5L8965 Apple A7 (APL5698)

 * iPad Air

T7000 Apple A8

 * Apple TV HD
 * HomePod
 * iPad mini 4
 * iPhone 6
 * iPhone 6 Plus
 * iPod touch (6th generation)

T7001 Apple A8X

 * iPad Air 2

S8000 Apple A9 (Samsung)

 * iPad (5th generation) (J71sAP and J72sAP)
 * iPhone 6s (N71AP)
 * iPhone 6s Plus (N66AP)
 * iPhone SE (1st generation) (N69uAP)

S8003 Apple A9 (TSMC)

 * iPad (5th generation) (J71tAP and J72tAP)
 * iPhone 6s (N71mAP)
 * iPhone 6s Plus (N66mAP)
 * iPhone SE (1st generation) (N69AP)

S8001 Apple A9X

 * iPad Pro (12.9-inch)
 * iPad Pro (9.7-inch)

T8010 Apple A10 Fusion

 * iPad (6th generation)
 * iPad (7th generation)
 * iPhone 7
 * iPhone 7 Plus
 * iPod touch (7th generation)

T8011 Apple A10X Fusion

 * Apple TV 4K
 * iPad Pro (12.9-inch) (2nd generation)
 * iPad Pro (10.5-inch)

T8015 Apple A11 Bionic

 * iPhone 8
 * iPhone 8 Plus
 * iPhone X

T8020 Apple A12 Bionic

 * Apple TV 4K (2nd generation)
 * iPad (8th generation)
 * iPad Air (3rd generation)
 * iPad mini (5th generation)
 * iPhone XR
 * iPhone XS
 * iPhone XS Max

T8027 Apple A12X Bionic and A12Z Bionic

 * Developer Transition Kit (2020)
 * iPad Pro (11-inch)
 * iPad Pro (12.9-inch) (3rd generation)
 * iPad Pro (11-inch) (2nd generation)
 * iPad Pro (12.9-inch) (4th generation)

T8030 Apple A13 Bionic

 * iPad (9th generation)
 * iPhone 11
 * iPhone 11 Pro
 * iPhone 11 Pro Max
 * iPhone SE (2nd generation)

T8101 Apple A14 Bionic

 * iPad Air (4th generation)
 * iPhone 12 mini
 * iPhone 12
 * iPhone 12 Pro
 * iPhone 12 Pro Max
 * iPad (10th generation)

T8110 Apple A15 Bionic

 * Apple TV 4K (3rd generation)
 * iPad mini (6th generation)
 * iPhone 13 mini
 * iPhone 13
 * iPhone 13 Pro
 * iPhone 13 Pro Max
 * iPhone SE (3rd generation)
 * iPhone 14
 * iPhone 14 Plus

T8120 Apple A16 Bionic

 * iPhone 14 Pro
 * iPhone 14 Pro Max

T8103 Apple M1

 * MacBook Air (M1, 2020)
 * MacBook Pro (13-inch, M1, 2020)
 * Mac mini (M1, 2020)
 * iMac (24-inch, M1, 2021)
 * iPad Pro (11-inch) (3rd generation)
 * iPad Pro (12.9-inch) (5th generation)
 * iPad Air (5th generation)

T6000 Apple M1 Pro

 * MacBook Pro (14-inch, 2021) (J314sAP)
 * MacBook Pro (16-inch, 2021) (J316sAP)

T6001 Apple M1 Max

 * MacBook Pro (14-inch, 2021) (J314cAP)
 * MacBook Pro (16-inch, 2021) (J316cAP)
 * Mac Studio (2022) (J375cAP)

T6002 Apple M1 Ultra

 * Mac Studio (2022) (J375dAP)

T8112 Apple M2

 * MacBook Air (M2, 2022)
 * MacBook Pro (13-inch, M2, 2022)
 * iPad Pro (11-inch) (4th generation)
 * iPad Pro (12.9-inch) (6th generation)
 * Mac mini (2023) (J473AP)

T6020 Apple M2 Pro

 * Mac mini (2023) (J474sAP)
 * MacBook Pro (14-inch, 2023) (J414sAP)
 * MacBook Pro (16-inch, 2023) (J416sAP)

T6021 Apple M2 Max

 * MacBook Pro (14-inch, 2023) (J414cAP)
 * MacBook Pro (16-inch, 2023) (J416cAP)

S7002 Apple S1

 * Apple Watch (1st generation)

T8002 Apple S1P, S2 and T1

 * Apple Watch Series 1
 * Apple Watch Series 2
 * iBridge T1

T8004 Apple S3

 * Apple Watch Series 3

T8006 Apple S4 and S5

 * Apple Watch Series 4
 * Apple Watch Series 5
 * Apple Watch SE
 * HomePod mini

T8301 Apple S6, S7, and S8

 * Apple Watch Series 6
 * Apple Watch Series 7
 * Apple Watch SE
 * Apple Watch Series 8
 * Apple Watch Ultra
 * HomePod (2nd generation)

T8012 Apple T2

 * iBridge T2

S5L8900

 * iPhone
 * iPod touch
 * iPhone 3G

S5L8720

 * iPod touch (2nd generation)

S5L8920

 * iPhone 3GS

S5L8922

 * iPod touch (3rd generation)

Apple W1

 * AirPods (1st generation)

Apple W2

 * Apple Watch Series 3

Apple W3

 * Apple Watch Series 4
 * Apple Watch Series 5
 * Apple Watch SE
 * Apple Watch Series 6
 * Apple Watch Series 7
 * Apple Watch SE
 * Apple Watch Series 8
 * Apple Watch Ultra

T2002 Apple H1

 * AirPods Pro (1st generation)
 * AirPods (2nd generation)
 * AirPods (3rd generation)
 * AirPods Max

T2016 Apple H2

 * AirPods Pro (2nd generation)

T8028
This SoC is referenced in XNU source code, and is based on T8020.