The most common suggestion we received was to make the buttons on the home screen more descriptive. Some users had trouble deciding which button to push to begin certain tasks. Other that that, users seemed to have an easy time navigating their way through the assigned tasks. After giving buttons more descriptive names in the second iteration of testing, users did not have this problem.
A few users misinterpreted how our cropping screen was supposed to function. It had both a "done" button and a next button. The purpose of this was so that users could proceed with or without cropping. However, these users "cropped" their picture, and then then pushed next without clicking the done button first. In the actual app, this would have resulted in the picture not getting cropped at all. As a result, we changed around the cropping screen for our second round of testing.
Finally, a lot of our buttons do the same thing as swiping the screen to the right/left. We tried to indicate this by making the screen scroll in that direction when the button is pushed. However, when asking users what they thought after the tests, they didn't seem to catch on to this feature. We aren't exactly sure how to make this more clear at the moment, but perhaps it would be more obvious on an actual phone, where swiping is a common feature. asdasdasf