Futureful is a new app from a Finnish startup, and it is backed by Skype co-founder Janus Friis. The app works a lot like StumbleUpon, as a content discovery tool, but it is smarter and aims to merge machine learning with human understanding.
As a result, Futureful functions quite a bit differently than other content discovery apps that you might have used. It has an ultra simple interface, where it is impossible to type in a URL. This simple interface also makes it confusing to use at first, so make sure to spend a decent amount of time with it after you download it to learn just how it works.