Big disappointment
On the negative side, (1) no instruction for how to use the app, and this is 4 years into selling it. (2) the app crashes when I tried to change the measuring quantity. For example, I wanted to add milk. The app uses quarts to measure the amount consumed. In this case, I put 4 ounces in my coffee. I tried to change quarts to ounces and the app disappeared. I tried it again, this time using .375 of a quart. The app accepted it and said I expended over 300 kcal, when on the label of the milk container it says 8 ounces - 120 kcal.
These are really basic elements of a functioning application. I’m speculating the seller has lost interest.