Two major updates in the last few weeks have got my attention.
Friendly: 77% (up from 64%)
This update has added some stability to the application once you finally get to log in. The update has added multiple account and some speed enhancements which are all a plus. I still find the app a little unreliable over slower speed WiFi and 3G, but apart from that getting better all the time.
Knights Rush: Now 82% (up from 74%)
Several improvements have been made to the app since the original review. The gameplay has been improved and when you change between the three characters the previous experience is not lost. Lots of fun, but still a bit to repetitive.