The Apple App Store
IOS Devices
http://www.iosres.com/
http://www.iphoneresolution.com/
Mobile Splash Screen 320 x 480
Iphone 3.5”/Retina 640 x 960
iPhone 4”/Retina 640 x 1136
iPhone 4.7”/Retina 750 x 1334
iPhone 5.5”/Retina 1242 x 2208
iPhone 5.5”/Retina Landscape 2208 x 1242
iPad Portrait 768 x 1024
iPad Landscape 1024 x 768
iPad Portrait Retina 1536 x 2048
iPad Landscape Retina 2048 x 1536
Ads:
PPI
Pay per install
Apple Store Connect API
https://developer.apple.com/app-store-connect/api/
https://developer.apple.com/documentation/appstoreconnectapi/list_apps