Yes, we have a sophisticated platform to cross-promote your apps and it is completely free to use.
Using Cross-Promo, you can target where your cross-promo ads would show up within your selected apps.
By Device & Platform
By Ad Placement
By Connection: Wi-Fi, mobile, & network
Limits the impression amount of your cross-promo ad for the unique device per day, by minutes, and/or per session.
To see how to set up a cross-promo campaign, read more here.