You can find the technical documentation about how to install Adikteev Cross Promotion SDK in your iOS app in the README of our public Github repository :
https://github.com/Adikteev/crossdk-ios
IMPORTANT NOTE
By default, CrossDK iOS links users to their predicted churn and affinity probabilities based on the device IDFV.
If you are using multiple developer accounts in the Apple App Store or have your own login system to identify users across apps, it is mandatory to provide your alternate user identifier when initializing CrossDK configuration in the optional parameter ”userId”. It is also mandatory to provide this same alternate user identifier to your MMP SDK when tracking in-app events, so that Adikteev can reconcile cross promotion ad requests and in-app activity (installs, opens, purchases, ad revenue).