Pickems X is an app which allows members to predict who will win sports games.
You can break a pickem down into weeks, with games for each week, or you can disable weeks and keep adding games to the contest overall. The member with the most correct picks wins the contest.
Some other features currently included: optional tiebreaker when determining the winner, allow members to predict ties/draws, set the system to use either the word tie or draw, enter a result of canceled for its result to not count one way or the other, reminder notifications sent close to the start of each week/contest, and more.
I have the system prepared for some future features, as well, such as allowing for more than 1 point for some games and career stats, which I didn't have time to get in yet.