Sportacular (free, $1.99 for ad-free version) is the best of the live scoreboard apps, even considering the more popular ESPN ScoreCenter and FOX Sports Mobile. Sportacular offers a user-friendly interface and detailed live scoring for all major U.S. sports. For NFL football, details include live game stats, scoring details, current field position and last play. The app is quick to load and quick to update and allows the user to set up "push alerts" on selected games or teams. The minimally-disruptive banner ads are quite bearable in the free version, but a 2-dollar upgrade gives you the clean version. This is the must-have iPhone scoreboard app.
update this week in which they sell a subscription service for $2/month that pushes notifications of line changes and half times for games you choose
dont know who'se lines they are using, but should next week