Problem 1.
In order to use this app, you have to register, and that's ok, but next to the submit button, it says, "By submitting, I agree with the terms."
I clicked to see what they were, but there was no link! I went to the developer web page, but it wasn't there, either.
Problem 2. I wanted a diary that would allow me to keep track of my pain and feelings, as well as how my life was affected by the pain.
It had all the usual medication and pain level stuff, as well as a neat little anatomy model to show where the pain is, so if that's what you want, this is for you. Just not me.