Yeah I think maybe the difference between what you are talking about, that app, and what I am thinking of is the aspect of something being personal. So like if someone hears that 1 out of 6 women get raped during their lifetime, that is just such a massive number and it is depressing and can make people feel like there is absolutely no hope in changing that sort of thing. But that is not a personal thing. There is no app that tells women how they can improve their chances of not getting raped, because, well, that isn't really possible.
So I am not sure if my example is making sense. I guess what I am saying is, data on a personal level can definitely inspire change, like the app you mentioned. However, that is just not always applicable, it rarely is in fact.
Environmental change is one of the few things that you can have an impact on by doing something by yourself. For most big issues, it is not that easy.