This is a plugin for the DashMaker OBD2 application to test different startup scripts to see which works best for your vehicle - when you are correctly connected, you shall see your revs and speed readings.
DashMaker lets you write plugins with full access to your vehicle OBD as well as the full power of the LUA programming language (great documentation online).
If you are interested in developing your own plugin then you can find out how to get started here:
Full information on building DashMaker apks on Google Play is available here:
Note: This plugin needs the full version of DashMaker