Having a Better/Worse button that you can click when you record your symptoms. Specifically in relation to your previous day. Having the Mild/Moderate/Severe/Unbearable choices are fine, but my symptoms can have subtle or extreme fluctuations. I can have symptoms recorded as Moderate for weeks, though have days that are distinctly better or worse than the day before, but the symptoms wouldn’t technically fall into the mild or severe categories yet. Being able to track to subtle symptom changes would be really beneficial. That way we could see if we’ve actually been on a subtle up tick and have been slowly improving over time, but the improvements are so minute that we don’t always recognize it. This would also be beneficial to see the impacts of new treatments or medications.