What is the term for a mobile ad format that appears at the bottom of a mobile device's screen and stays there as the user scrolls?

The term for a mobile ad format that appears at the bottom of a mobile device's screen and remains in place as the user scrolls is known as a "sticky ad" or "sticky banner." This type of advertisement is designed to remain visible to users regardless of their scrolling behavior, effectively maintaining its presence on the screen to increase engagement and visibility.

Sticky ads are particularly popular in mobile advertising because they ensure that key messages or branding remain in view, maximizing exposure without completely interrupting the user's browsing experience. By sticking to the bottom of the screen, these ads can enhance click-through rates (CTR) while providing a less intrusive experience compared to traditional interstitial ads that take over the entire screen. This format is particularly effective in driving conversions and enhancing brand recall among users.