Financial mathematics

Convenient reference, but it used to have more. Now it gives tictoc/temu ads every click. Also several sections are completely irrelevant, like a chat bot filled it and nobody checked it. Ex. Grace period: a bunch of tv, song, and movie references to a Wikipedia page

Very detailed descriptions and literally covers everything in the field that I've encountered. I still use the app to this day and will continue to do so.

I'm amazed that a app like this exists. After lot of research i found something similar to my need.