I want to use the PS Touch files that I am creating for potentially large format (anything beyond a thumbnail) work. Regardless of the extension being used, I get the same low quality image results/very small sized files which do not translate beyond the height image size available in the app. Any advice or comments appreciated.
There's a max output of about 12 Megapixels but I think it's always set at 72 DPI (which can't be changed).
Do you have Photoshop CC? Have you tried using its Image > Image Size command?