Installing an App you bought on JustFly is easy. Just unpack the content of the zipfile you received onto your transmitters SD-Card. If you received a (personal) license, it has been sent in a separate email. Just unpack that one as well.

After doing so, your SD-Card should look like this:

When browsing in the Taranis, you should find the same directories:

Installation done, ready for activation.

have fun and

Just Fly!