So...I wrote 'TempoCalc' some time ago, which I find very useful at the beginning of a project or for jamming when you want to know the tempo of that song you've got playing around in your head. I was quite chuffed to create a little app with MFC support which zips down to less than 4KB!

Simply run the app and tap any key on your (computer's) keyboard. If you pause for two seconds or more, it resets internally and you can start again.
This is for Windows only (sorry Mac users).
I hope that some of you find this useful in some way.
Royston