In the title of this page:
https://www.b4x.com/android/forum/t...help-with-json-parsing-b4a-b4j.35963/#content
It says B4A/B4J. If I understand correctly, it only works in B4J?
I think it means this tool is useful for your development of B4A and B4J at that time, but it is actually useful for B4X (include B4i or maybe B4R)
This tool is use for visualising the objects structure and generate a boilerplate B4X code especially for debugging purpose. You still need to trim out the default code for actual usage.
As a user who already familiar with how httpjob works and now we can easily cast the response as JSON object, this tool has become less useful for me.
If you want to create a similar tool for B4A I think you can, using the CLVTree view. B4A app (for small screen mobile or tablet) has limited screen real estate so I don't think it is ideal unless you hide the views in separate tabs or pages.
However, the online tool is more convenient and fast. Why you need a B4A app for this?