They should call it a test app – Printer Pro Lite by Readdle Review

It would be a fair practice if they called it "testing app" who reads the fine print!! It wont allow you to print except for a test page,it keeps on prompting you to upgrade to pro!! If you don't want to spend the money,download directly an app for your printer model.
Review by Just4dat on Printer Pro Lite by Readdle.