I am now a happy pro owner and the app works fine. As you probably know, the 2013 Leafs made May or later report some values differently than prior Leafs. Specifically, capacity when new is usually about 61Ahr and miles reserved below vlbw is greater. I would much rather know distance to turtle than distance to lbw or vlbw.
I understand that distance to turtle is difficult to estimate and that the current distance to reserve function helps some. As a temporary help if you could add bubbles in the settings for 0 and 1% SOC reserved it would help until a way to calculate distance to turtle can be worked out.
Also, since many of your new users will more and more be 2013 owners,
It would help if initial setup included a notice notifying a new user that the 2013s have lower new capacities. Currently there are appearing more 2013 owners very worried when they install leafspy on their new car and get a value of 90% of "new"
At the same time I think you should rename health as simply "H" or H-factor. It really isn't the health of the battery. I actually think this value shouldn't be available to most users at all, since we really don't know what it represents.
2 LEAFS, bought 1 week apart. 2013 S for me, 2013 SV is wife's. Both manufactured May 2013, both battery capacity about 60.5 AHr. Both with normal range. No degradation after 2 years and 19,000 miles.