I have updated the original post on Physics Gizmo with the details regarding version 2.0.
There are 3 new ways to collect data and a refined user interface.
Here is the link to download it from Google Play.
Please let me know on the original post if you have any questions, comments, or suggestions and if you like Physics Gizmo, please rate it in the market. Thanks and I hope this enables you and your students to DO science like never before!