It's good... I've been using this on a Nexus 4 phone and it's been fine. More or less, it has all the content and articles from the site shrunk down to fit nicely on a phone screen. The fonts are clean and clear and the layout is simple and easy to navigate. Unfortunately, it isn't available for my Nexus 7 Tablet, which is a shame, as I would much prefer to use this kind of app on a Tablet over a phone. I'm not sure if it's available for other Tabs? All that said it's perfectly usable as long as your phone has a nice crisp and clear display.
Slow start Takes so long to get going that I thought it wasn't working. Then crashed when I started tapping the screen. Works well once it's fully loaded.
New features, nicer design, now works on Android tablets.