MacOS Sierra

Nope. I've spent hours trying to get Captivate working on Sierra and the answer is no.

Ironic that Adobe has screenshots of what look suspiciously like Apple products with Captivate 9 working on them ...

harumph

Likely not, how many days ago was it released?

When was the last release of Captivate?

Was it released after OS X Sierra was released?

(Then how COULD it be 'fully compatible'?)

The Captivate 9 requirements page says this:

Mac OS

Multicore Intel processor

• Mac OS X v10.11.6

Adobe may indicate compatibility for a later update, but more than likely compatibility with OS X Sierra will only be accomplished after a major release.

If you are already using Captivate, and dependent on its stability in a production environment, I would recommend you do NOT upgrade until others have tried it and reported on their success.

If you're just thinking of trying it out, let us know what happens. :-)