I installed it but coincidently hit back and now I cannot get back to the initial setup screen to finish entering my vehicle information. I even tried reinstalling but the screen is somehow skipped. I imagine it would be in the documentation and is just my laziness.
answer: (from his user guide)
http://www.zonewalker.com/acar/help
"After entering some more records and while you are on main screen, you may tilt your phone (turn it 90 degree counter clockwise) to go to landscape mode and to see some charts and reports. While you are viewing the first chart in landscape mode, just swipe on screen (like on iPhone to see more pages) to see the next charts/reports."