Version 0.5 is about to ship.
The WordPress plugin has been approved, and the source code will be available from the WP Subversion repository shortly.
I will upload the Android application later today: I am happy to report that there are no known bugs, and the app is performing solidly both offline and online. That said, back up any important data using CSV until at least version 1.0.
Thanks to all of the beta testers for their feedback and support.