By Dmitriy Delistoyan
Open the Mac App Store to buy and download apps.
Simple developer's tool - checks whether a JSON string is valid
and displays the element tree.
What's New in Version 2.0
JSON result improvements.
I installed the app in El Cap and tried to open it. There as no UI on the screen. I could see the text in the menu bar and when I tapped the ‘About’ menu, a small window appeared, but the main app never appeared. Uninstalled.