I forgot to post yesterday this yesterday:
Originally I thought that Pocket Change was only for games. I'm an Android app developer, but I don't make games. I contacted Pocket Change though, and they said I could integrate it in my app as well.
So, as of yesterday, my app also has Pocket Change! My app is called "Be Happy!" and it's a simple app that shows self-help tips that teach you how to keep yourself happier. Here's the link: https://play.google.com/store/apps/details?id=com.heightechllc.behappy