TrackAddict vs TSD Rally Split

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.

The TSD Rally Split consists of two clocks with different purposes. Master•Time on the left is the rally time-of-day clock. This clock can be adjusted to synchronize with the Official Rally Time clock. Also, the Master•Time clock can be split/stopped by touching the button on the left side. Retouching the button will cause the split time display to disappear. 
Monte•Carlo on the right is a stopwatch with two buttons: one starts and resumes the stopwatch and the other records each lap. When the stopwatch has been stopped, there are three options for resetting it to zero for another start available when you click the Stopwatch Reset Options button below the stopwatch. One option (To Zero Now) is to reset to zero and await pressing the Start button. A second option (Next Minute) is to have the stopwatch reset when the time-of-day clock reaches the next full minute. A third option (Preset Time) allows you to select any time in either minutes:seconds or minutes:cents using the four sets of green or red buttons to increment to the time desired. In order for any of these three options to take affect, you must touch the Apply button on the Stopwatch Reset Options popup. Touching the "Adjust" button opens a popup that allows you to synchronize the Master•Time to the Official Rally Time by making adjustments in increments of +/– 0.1 seconds to account for total errors of as much as + or – 10 seconds. Touch the Lock button to make clock adjustments. Adjust time ahead or behind as needed and, when finished, touch the Unlock button to prevent unintended adjustments. Touch the double Arrows singly or continuously to make adjustments in +/– 0.1 second increments. When unlocked, a chime will sound at 0 seconds and 30 seconds. This audible cue is helpful when synching with an Official Clock. When the Official Rally Clock’s second hand reaches zero, the start of a new minute, estimate the error by which your clock is behind or ahead of the Official time and add or subtract 0.1 second increments. On the clockface displays, time can be measured in either seconds or decimal minutes. Additionally, there are two levels of time precision. One displays two digits for seconds or two digits for hundredths of a minute. For more precision, the other measures and displays seconds as two digits plus tenths of a second or three digits for thousandths of a minute. There are three watch face styles: black, yellow, and white.