This application is tested and supported on the following iOS versions and devices:
iOS 12.x, iOS 13.x and iOS 14.x
iPhone 6 Plus, iPhone 7 Plus, iPhone XS, iPhone 11, iPod 7, iPad mini, iPad Air and iPad Pro
Please see the user guide for supported printers.
The ZQ200 series, ZQ112, ZQ120, ZR118, ZR138 printers require firmware version 88.01.04 or later to work with the app
See this support article for instructions on where to get the firmware and how to upgrade your printer.