I know that there are a bunch of simple self help/mental health apps in which you input your “data”, such as, how you are feeling that day, what you have eaten, what you have done and then highlights things which supposedly maybe makes you feel worse/anxious/good/happy or what not. Is there any app or something which uses regression analysis/machine learning which makes better correlations between input data and visualize them? I at least imagine that using machine learning, you could make a lot better personalized assumptions about which things are important to your well being and which things make you feel x way (of course, it also depends on the quality of input data, but i think it would still be a lot better than these simple apps)

P.S. I know that i could have written this better, but i am quite tired and will go to sleep soon and want to ask this here before i have forgotten about it lol