This app was mentioned in 1 comment, with an average of 3.00 upvotes
I use EMA Personal Wiki for all my note taking. It let's you make a Wikipedia style set of notes with links to other pages and it syncs up to your Dropbox. It's not pretty but it works simply and effectively and you can pair it with the app for pc as well.
Edit: link https://play.google.com/store/apps/details?id=com.janwillemboer.ema