Based on the huge amount of work done by the team at Oregon State University, our group at UW Madison has a working version of the Android client built. It still needs work, but could really use a bit of field testing.
Installation is super easy, open a browser on your android device, navigate to https://github.com/ARISGames/aris-android-client/releases
and touch the newest .apk file
It will download and install.
Use this thread to report back any findings.
Note: The android version has some significant limitations including:
1. No support for AR, QR, Decoder or iBeacon triggers
2. No notebook