Although Bluetooth is not officially supported by our app, our app should be able to see and use any Bluetooth-connected peripheral that your local device can see and use. For example, if your device's web browser can see and use a Bluetooth-connected printer, then you should be able to print from our app as well.
Android offers more flexibility for connecting to such devices in this way than iOS does. We've helped clients connect an Android device to a Bluetooth printer using a free plugin like this, and there may be other options worth exploring:
https://play.google.com/store/apps/details?id=ru.a402d.rawbtprinter