I was pleased to receive an update from Duolingo – this update now includes the ability to learn Dutch. I have written about Duolingo before, but I personally think the experience is vastly improved by being on a mobile device. Duolingo is more on the minimalist side – there isn’t a lot to stare at on each screen. The iPhone version simply reduces the white space, without losing any of the look and feel of the PC version. And in this case, using your finger is much faster than using the mouse.
Note that if your Dutch is already at a higher level you do have an option to test out of the various levels. Duolingo is great for reading, writing and listening, but the Dutch version does not have speaking exercises available yet (perhaps because this language course is still in beta).
Duolingo uses the concept of gamification – using gaming concepts (achievements, earning experience points, etc) in learning settings to make users keep wanting to come back for more.