Accessing an iPhone sports betting app for some mobile sports wagering can be . version of that sportsbook will offer NFL, NBA, MLB and NCAA sports betting. A look at the best sports betting apps from the top sportsbooks in the industry. Find the best sportsbook app for your iPhone or Android device and also an. Free odds, lines, spreads, over unders, totals, scores and breaking injury reports from Sports Insights. In addition to live betting odds, you'll see how the public is.