Opt-in ads are a type of mobile advertisement that users actively choose to engage with. Unlike standard ads (e.g. banner ads, interstitial ads) that are displayed to users without their permission, opt-in ads request explicit consent from users.
Since users voluntarily engage with these ads, they are considered less intrusive than traditional ad formats.
In mobile marketing, there are two common types of opt-in advertising: rewarded video ads and offerwall ads.