An offerwall is a dedicated in-app screen listing multiple offers — install another app, complete a survey, reach a milestone in a partner game — that reward the user with in-app currency or perks for completing them.
How offerwalls fit alongside other formats
Unlike interstitials or banners, offerwalls are entirely opt-in: the user navigates to the offerwall screen deliberately, usually to earn a specific reward, rather than encountering it passively during normal use. That makes them one of the least intrusive formats available, at the cost of much lower overall reach than an ad that shows automatically.
Where they add the most value
Offerwalls perform best in apps with a meaningful virtual currency or reward system — games with gacha or upgrade mechanics, utility apps with premium feature unlocks — where users have a clear incentive to seek the offerwall out rather than needing to be shown an ad.