Lacks a few features. Every time you open the app it is like you are using it for the first time. By that I mean that it doesn't remember which sites or tags I like, so I have to manually search for them every time. For browsing new questions though it would be very helpful to be able to shortlist your favorite SE sites and tags on some sort of "home screen." It does not display math properly for sites that uses it such as math.stackexchange.com. I imagine that doing so would require supporting the mathJax extension in the app, so I am not too surprised. The user widget works well, and is the best feature of the app. I would really like the ability to combine all of my SE accounts into a single widget though, instead of having a separate one for each site.
Great stack app Never has crashed, love the UI. Just wish it had more of 2.0 API. Wonderful app.
Still cannot log in. Too costly. Better alternatives are available. They have not implemented promised features.
Great design This is much better than the official app! Don't know why there are so few downloads :/
Updated UI for Android 4.x.
Refinements to question/answer views.
Updated to use version 2 of the Stack Exchange API.
Perform a Multi-Stage Fitness Test ("Beep Test"/"Bleep Test") using your phone.