As the on-track action heats up with NASCAR's postseason set to begin, NASCAR, Sprint and Turner Sports announced this week the launch of the sport's first official app for iPhone and iPod Touch.

The NASCAR Sprint Cup Mobile App allows fans to follow their favorite drivers and stay on top of all the Chase for the Sprint Cup race action, including access to race day content, schedules, standings, breaking news and more.

iPhone customers with a Sprint Unlimited Data Plan will have access to extra features, including:

-- Live MRN and PRN race radio broadcasts

-- Live in-car audio for all 43 NASCAR Sprint Cup Series drivers

-- Live RaceBuddy in-car video and track camera views

-- Live NASCAR on SPEED broadcasts including live Qualifying, Practice and favorite trackside shows such as NASCAR RaceDay

-- Live in-race highlights and alerts

-- Live post-race press conferences

-- Real-time leaderboards and Pit Pass telemetry data

The popular NASCAR Sprint Cup Mobile App provides fans with 24/7 access to all things NASCAR.

NASCAR's digital rights including NASCAR.COM, the official online destination of NASCAR which provides racing enthusiasts with an all-inclusive offering of engaging content including fantasy games, video highlights, social elements and in-depth editorial content, are currently managed by Turner Sports.

As part of a restructured partnership announced earlier this year, Turner Sports remains the exclusive sales agent across the NASCAR Digital Media platform through 2016 while NASCAR assumes operational control on Jan. 1, 2013 of its interactive, digital and social media rights and all related platforms.

As part of that two-year digital partnership extension, Turner Sports remains the exclusive sales agent across the NASCAR Digital Media Platform through 2016.

The NASCAR Sprint Cup Mobile App is available for free from the App Store on iPhone and iPod Touch or at www.itunes.com/appstore.