Issues – Pixel Art － Color by Number Review

I love the app so much I spend about 4-5 hours everyday coloring. The only problem I have with the app is storage space. Is there a function on the app that allows you to delete completed pictures to reduce storage space? I am an avid player of this app since the beginning and have color almost every pictures released daily. Now my iPhone storage is almost out of space because this Pixel Art app takes about 35gb of my phone storage. Eventually it will grow to a point that my phone can longer support the storage of this app and I will have to delete the app. I hope it won’t get to that point because then I will lose all my completed artworks. :( Please help and update the app to add the delete function! Thank you!
Review by Queenie0428 on Pixel Art － Color by Number.