I know you're asking for an app, but I just would like to suggest a good ol fashioned diary. I use this method and really like it, you can sketch up abstract mo

I know you're asking for an app, but I just would like to suggest a good ol fashioned diary. I use this method and really like it, you can sketch up abstract models of your ideas and implementations, not to mention jott down thoughts and algorithms easily enough. I really like the feel of a pen on real paper, I feel I even remember better (I know on what part of the page I wrote something, and can remember the dates, for some reason I dont have this kind of recall when typing - probably due to all the noise and multitasking) when I write things down by hand. I use this method and like it so much Id never consider going digital.