Android TripGo users, if you want to be on the cutting edge, please follow these steps:
Once you have joined, when you download/update the app from the Google Play store, you will automatically get the latest version, beta or release.
You can see the most up-to-date features of the app before other users. You can report problems or request more features via the app or the Google+ community.
To go back to the regular version of the app, simply go to the second link and leave the test.