Every Premier League season, my friends and I run a prediction competition, everyone calls the scorelines, points get tallied up, and the winner gets bragging rights. The problem was that it always lived in a messy WhatsApp group with someone tracking scores in a spreadsheet that inevitably ended in an argument about who got what. So I built Punditz to handle it properly. You predict scorelines, spin up a private league with your friends, and it does the scoring and leaderboard automatically a...