The Richta Rally Calculator Demo Version is a software program which is intended to perform the calculations necessary for time-speed-distance road rallies, such as those sanctioned by the Sports Car Club of America.

The free version of Richta does not include the same feature as in the Lite and Full versions. The trip odometer is limited to 10 miles/kilometers. The Full version supports display of calculation results in 0.01 minute increments as well as seconds. It also maintains a database of all legs run and provides the ability to look back, review, and edit the calculations. The Full and Lite versions of the app are also available on Amazon.com.