We're all on the 4S, so once we get the email we'll do our best to add you to the testflight list as soon as possible. Sorry for the confusion.
And we've heard from a lot of Android users, and we feel your pain! One of the developers on our project doesn't even own an iPhone so you have someone vouching for you on the inside. It's definitely on our list of to-dos.
What testflight does is take your device's UDID (when you register your device with tham ) and allow the developer to rebuild or insert your UDID into the build, and then you can install to your device.
There's still no way (with an unrooted device) to install an unapproved app without the UDID in the build - testflight just greases the path for that process.
https://en.wikipedia.org/wiki/There_are_known_knowns
* [T]here are known knowns; there are things we know that we know. There are known unknowns; that is to say there are things that, we now know we don't know. But there are also unknown unknowns – there are things we do not know, we don't know.
However, it would be great if some of these activities can be triggered based on GPS location rather than clicking.
What about setting waypoints to track between. I set a waypoing GPS location for my home. Then I set one at the rain station near my house, then again near my job and finally at my job.
Measure commute times between all these points automatically.
If you have success with this, I'm sure people would be excited to see updates that let one track units other than time and 'ones', such as calories and distance travelled.
So now I will check out your project and vote for it if it is the best ;)