App Recommendations for Symptom Tracking

One of our community members, @teaD asks:

"Hey, PsA folx,
Quick question: I'm... a reluctant convert to the idea that tracking my symptoms might be useful. (I've gone the route of ignoring them - don't do that - and initially I tried to collect them for my primary doctor for a while, but he was disinterested, usually dismissing my list as "it's part of the disease."😉 I feel like it would help to have some kind of... map here. I know there's really no rhyme or reason to flares (mostly?) and I've gratefully downloaded the .pdf flare tracker the Editorial Team put together (https://psoriatic-arthritis.com/living/symptom-tracker). My question for you all is, do you use a phone app tracker of any sort? And what kind, if you do?
Thanks much."