Pocket POD Editor - https://pocket-pod.web.app
I just created this free available online editor for the Pocket POD.
This solution may be very basic but works well and is in continous development.
It works also on a mobile device if you have the right USB cable.
It is also targeting offline support.
Here it is:
https://pocket-pod.web.app
And here is an image:
https://imgur.com/0l95h99
Have fun