My high school art teacher had taught me to never share the inspiration or reference photo that I used to do a piece of artwork. As soon as you do, viewers will compare the two to see if you have captured the likeness, which could make it difficult to appreciate the artwork on its own.
This app links your drawing directly to the inspiration photo, so you have no choice - people are going to see both. Despite that fact, I've really enjoyed using the app. It was a lot less stressful for me to draw strangers than to try to draw a family member, and because I could relax, I learned a lot more.
These are the drawings/paintings that I've done so far, in order: