may be usable...

I tried this out to print to a photo printer... but the setup is very restrictive. It just attempts to print and if it cant you cannot make adjustments.
For example, my photo printer prints 4x6 only. It is a DNP RX-1 Printer. In setup it attempted to print, but my printer errored out saying it set a paper size the printer doesnt support. There is no way to adjust it. No advanced button to accomodate different sizes.
I gave up and deleted it.

r-berndt about Printer Pro Lite by Readdle, v5.4.9