I've used a number of apps to track information that I don't want to lose....er....track of. Google Keep is good, and accessible across platforms. However, keeping related information together can be done only in rather large category headings. OneNote is another, but I seem to have trouble with it on tablet and phone versions. Most of the "to do" list apps I've looked at are great at tracking tasks. But, again, they seem to lack the grouping I was looking for in a large project.

I began using InfoRecall https://www.phantech.com/ back at version 3 or 4....not sure. And, while it's not quite as robust as some, it's hard to beat the ability to group information.

A recent house fire has necessitated the collection of quite a bit of closely related information that I can access in one place. And, fortunately for this disaster, I don't really need cross platform access for instant retrieval. It's just important to have everything in one place, and eliminate the written notes and lists that quickly became way too cumbersome.

InfoRecall uses an Explorer-like interface. The price is reasonable, and upgrades are even more reasonable. Worth a look, if you are in need of some kind of personal project-type management app.

Screenshot is what I've set up so far for this house fire project, and each icon reveals collections of information, all related to this particular situation.