LineStar for FanDuel DFS is a lifestyle app that provides a lineup optimizer, projections, and DFS strategies for daily sports players. Developed by Fantasy Sports Company LLC, the app is available exclusively for iPhone users. It provides advanced sports analytics for FanDuel and covers a wide range of sports including NFL, NBA, MLB, NHL, PGA, NASCAR, WNBA, College Football, and College Basketball.

The app's algorithm takes into account over 100 unique factors to help users gain an edge in daily fantasy sports on FanDuel. It provides instant access to player-specific advice, trends, data, and gives an overview of how other players feel about an athlete. The app offers push notifications to keep track of important game/player information, while the LineGen feature gives optimal lineups according to users' preferences. The app is free to download, but users can subscribe to the premium version for full access to projections, strategies, and optimal lineups for all sports. The subscription starts at $5.99/week and can be canceled anytime.