The affiliate glossary ↗AFFDude / Field notes
CPE
In plain English
What does CPE mean?
Cost per engagement: payment for a post-install action inside an app, such as reaching a level or completing a tutorial.
CPE sits between CPI and revenue share. The advertiser pays more than an install but only for users who actually use the app, which filters out bots and low-intent traffic. For affiliates it means slower feedback: the event may take days to fire.