Users not only like to use apps, they LOVE to! According to eMarketer, 86% of mobile web time is spent in-app. The only issue is that users don’t like to pay for them. But, that doesn’t mean you can’t monetize your app, it just means that freemium is here to stay.
You have a few options, you can offer in-app purchases and sponsored gifts, but not everyone has the development resources that are necessary to make them natural to the app experience. That means that most will rely on what ad networks can provide, and that’s a lot.
The best provide SDKs that are easy to integrate and can be included in mediation stack.
Ad format options vary, but typically fall under two broad categories: display and video ads. The question is, should you be using formats from one or both categories?