Product managers: How do you feel seeing ads or promotions in an app where you pay for service? Example: Swiggy

We pay for each delivery. But from a product perspective, what’s the reasoning to show promotions or ads of other apps. How is this justified? Does user feel comfortable to see ads in an app where they already pay for the service? This is similar to showing ads in Airbnb app. #Swiggy #Airbnb #pm #product #productmanager