Does anyone know of any good monetization strategies for free apps aside from Google ads? Some context: I have an app that utilizes Yelp’s API and I’m trying to figure out good ways to make money from businesses to advertise on my app. But I know Yelp already does this and it wouldn’t make sense for them to pay twice on separate apps. I’m running out of potential ideas and might default to just slapping Google Adsense on my app and calling it a day. Just wanted to see if anyone has run into this issue before and has some good ideas for it?