Free Google play credit. You don't get cash but it's worth it to use to purchase apps or music or movies. Update now that Google does allow you to purchase music and you can't use this for anything else in Google service like Stadia. There isn't any reason to use this app. The only things you can purchase are apps and movies but if you don't use the money they take it away from you. What a rip off after you give them the information they are looking for to update Google.