I use a free online YouTube downloader to get the videos I want from popular video platforms. It only requires a URL to download the video without having to subscribe: http://acethinker.com/youtube-downlo…

I think SimpleNote is the simplest application in this review, EverNote is classic and cross-platform note taker but a bit more complicate... There’re also applications specially made for mobile like Vesper, Write App, etc (I found them on http://goo.gl/kLuk30)