This is a discussion for engineers that needs to be resolved before we are running install campaigns in May 2026.

We would like to explore how we can match what we are currently able to track in event.android_install_referrer_event for Android with iOS data - campaign_id source for new installs.

We use this Android data to track CNB Campaign install rates and to track user churn from first install, not having this data from iOS has been a longstanding limitation due to iOS not giving us an official “install” or “post-install” callback. We may not be able to get parity with Android but would be good to get a 'first time launch' event or something similar

Ideally this data is eventually included in the new planned Apps Authorization apps_base data stream.