Theres this great free app called Youper, the reason it's so great for us is the way it tracks things and you're able to talk things out with a very smart bot thatll check in on your and/or remind you things. The heat part is when you put in an emotion, it records the timestamp and puts them in a graph. You'll have to download it and see for yourself but personally, the fact of timestamps and being able to note what sets you off and seeing the fluctuation over time is fantastic.