TrackAddict

Using Your Smartphone For The Track Is Easier Than Ever!
• Road Course, Autocross, Rally, Drift, 4x4, and Drag Racing
• Race Timing + Data Logging + Analysis + Video
• Works Almost Anywhere! 1000+ Predefined Circuits, or Add Your Own
• GPS Lap Timer & Display with Predictive Timing (Circuit mode)
• Sector Split Timing & Theoretical Lap Time (Circuit mode)
• High-Definition Video Recording + Data Overlay
• Lap, GPS, G-Force, and OBD-II Data Logging
• Driving Line Analysis, Statistics, Data Graphs, and Run / Lap Comparison
• Optional Live Telemetry Streaming via Live.RaceRender.com (requires Pro upgrade)
• Also Supports External GPS and OBD-II Devices
• OBD-II Live Monitor, Code Scanning / Reset, and Data Logging
• Easily Exports Data and Video to RaceRender
TrackAddict, by HP Tuners, transforms your iPhone®, iPad®, or iPod touch® into a motorsports telemetry and video system. See your lap times instantly, capture video and telemetry data, compare circuit laps side-by-side, impress your friends with video+data overlays, and more! Quick and easy setup.
Free Edition provides most of the features at no cost, but is limited to storing three recordings, does not include live telemetry, and adds a logo to videos.
Pro Edition removes those limitations and gives you every feature currently available from this app. It is available either as a low-cost in-app purchase, or as a separate app.

Advisories and Disclaimers:
Always drive safely. Intended for responsible use in a motorsports environment. Use at your own risk.
Works on iPhone and compatible GPS-enabled iPad, iPad mini, and iPod touch devices. Devices which do not contain suitable GPS hardware may work when combined with a compatible external GPS device. Performance depends on good GPS reception conditions, and may vary. Features, capabilities, and pricing may differ between platforms and are subject to change at any time.
OBD functionality is optional, and would require a supported OBD-II interface device and a compatible OBD-II compliant vehicle. See website for details.
Features and capabilities can vary depending on your device and other circumstances.
Use of Live Streaming feature is optional and requires a premium upgrade. Services are provided as-is, and are subject to change or discontinuation at any time. This functionality does have privacy implications. Please see this app's online documentation and http://Live.RaceRender.com before enabling its use. Use of Live Streaming service requires an Internet connection, and is therefore subject to your wireless carrier and/or Internet provider's data rates.
Continued use of GPS running in the background can dramatically decrease battery life.