Well i also installed it now and it is great! Indeed a no BS design and really simple (in a good way). If a paid option comes along I will definitely get it if am not a poor student anymore. Only issue i had was that I was not able to switch to mm\hour (unresponsive ui button) on my FP5 but I expected so much less and you have already blown me away. If you would progress development a widget would be nice. (I really don’t expect further development but maybe youappreciated the feedback.
And how does the free API differ? Less exact data like graphs?