June 3 vs 4 license

We have developed an app using Juce 3, and are now going public beta. Should we purchase a license for Juce 4 for this, or is there another licensing scheme for Juce 3?

Does the JUCE 4 license cover using older versions of JUCE ? This isn’t clear in the JUCE 4 license agreement. Any other thread where this is answered ?

Yes the JUCE 4 license covers older versions of JUCE.

In the case where you started developing with JUCE 3 and released only after JUCE 4 was launched (and therefore couldn’t buy JUCE 3 anymore), then you would have to buy a JUCE 4 license, and you would be covered for previous versions of the code.