To use the CodeREADr mobile app’s PRINT feature, you need to have the Mobi Print app installed on your iOS or Android OS device. It runs in the background once set up.
Importantly, you can use the same account for both applications. Also, there is a 15-print trial for you to try and see. Lastly, contact firstname.lastname@example.org if you need the Mobi Print team for help with your ZPL.
Here are some basic instructions on pairing the Mobi Print app.