Zepto Product Personalizer

*UPDATE*
I have gotten in touch with the programmer and he has been helping me learn the program. We went ahead and got a subscription. I think this app will work well for our needs. The app has a bit of a learning curve but once you figure it out it's pretty straightforward, and does a nice job.

I think this app has huge potential, and i got started using the info they provide in the documentation. But unfortunately I can't get any support from the developers. They won't return emails with seemingly easy questions. I will have to look for another app.