I've added a few minor tweaks to my scalespeed tool, nothing major just a few tweaks, the main one is a choice over how much detail to show for each run. On smaller screens like mobiles only the final mph is shown when the the page loads (you can see the effect if you shrink your browser on desktops or laptops). There is also a control button that allows you to switch between the two options, so if you are on a mobile you can still choose to see all the information for each run, or hide the extra detail on larger screens if you want. The following screen shots show the tool at three different widths (in this case I just resized a desktop browser window) or you can see the real thing, as always, here: http://www.entwinesolutions.co.uk/scalespeed/

First with minimal information about the run on a narrow screen;

More information about the run is shown on larger screens;

larger still sees the table moved to the right to reduce scrolling;