after messing with my phone and another Tablet of mine I found that even though I used two of the exact same tablets (Lenovo A2109) and transferred all scenes and Artwork (in the same location), after a while some of the art work would disappear,
Even after I went through and re set all the artwork it would still loose the artwork randomly after a random amount of time,
where the tablet that I created the "App" in hasn't had any problems, even after I rooted it and had to reinstall everything, I even went as far as creating a tablet mount that keeps it right at arms length and then use autovoice to have a short range open air mic,
so if you are going to create an app of your own, I hate to say it but I think your best bet is going to be starting from scratch