I am looking for an app will allow me to input, liters used, and kilometers driven and it will compute liters/ 100 Kilometers. This a common fuel efficiency measurement outside of the US and the UK. I have one I use on my blackberry playbook that keeps all the history. It is great little app but I can't seem to find something similar for the ipad. I don't want to have to do a bunch of manual conversions first and like that I get a chart showing my fuel consumption history by date.

thanks