This app is great for determining all sorts of information about your Nissan Leaf and its battery. On its surface, there is a lot of visual reporting for the health of your battery, tire pressure, state of charge, even elevation changes while you drive - all in real time.
Under the hood, there are enormous amounts of raw data that it collects and will show you.
It can also be set to sync the raw data in csv format to Dropbox, if you really want to nerd out and create some of your own analysis.
This app is a little expensive, but for all of the information it provides, and for how much it can save you if you understand how to alter your driving based on the data, I think it is well worth it.
Support is extremely responsive and helpful. If you own a Nissan Leaf, this tool is invaluable.
Cynicl12000 about LeafSpy Pro