I've played work or neighborhood pools in the past; everybody chips in a dollar and makes their picks. The person with the most correct picks each week gets the pool. It's hard to do well consistently, but I usually finish the season with more dollars than I started with. This is the first time I've done one with an app on my phone, and it turns out I'm awesome! I set up a pool and it tracks how well each person is doing with their picks. I'm in first place this week, and in first place for the year. I could be really hard to beat. I'm considering inviting someone else to join the pool too, to find out.