That’s OK as far as it goes, but it’s pretty basic and doesn’t display enough information at one time, so makes it more difficult to make a quick judgement. But it works and it provides the necessary info.
Mine gives a more comprehensive display i.e. speed in each gear in kph and mph in 500 rpm increments and includes a list of the Viper alternative gear ratios to input if required.
I’ll try and put up a screen shot of mine, tomorrow (but the display area on this forum is crap!!) and work out a dropbox so that anyone can download it.