This no-frills app provides an easy way to take the vig off a betting line. It calculates the vig-free line, implied win probability, and the sportsbook's cut (overround). Use it to shop around for the best line or to find a fair line for a friendly wager. Works with both American and Decimal odds.

The app also calculates vig-free half point values for NFL, NCAAF, NBA, and NCAABK lines. Know how much books are overcharging when you buy points.