FF2,
Thanks for the feedback! Yes, we're collecting phone/OS information so we know what devices are successfully running the application. This helps us isolate issues and support users that are having trouble. We are only focused on our application and do not know anything about other applications on a device. Our Terms and Conditions do say we may collect GPS information. We're not actually doing that now but we've prototyped an application that uses GPS information to better support study groups. You can see a demonstration of this on our website on the “Demo” page titled “Android Demo”. You may also notice these T&Cs are very similar to those of other mobile application providers such as Google, Yahoo, and Apple. Hope this helps. Thanks again!