The native TwinSpires App offers a betting experience from the leader in online horse race betting and boasts as the official betting app for the Kentucky Derby.
https://apps.apple.com/us/app/twinspires-horse-race-betting/id948757156

The app is fast, easy, intuitive.
The app remembers your favorite bet types, win/place/show, exacta, straight, box and more!
Mark your favorite tracks to bet for quick referencing.
Easier swiping through the race cards.
View live racing while navigating the app.
Remain logged into the app to never miss a start.