This is an extremely late reply… but I saw your post in my searching, so I thought maybe I could help out a bit. So, as far as I know, AQM does not have a free trial (you can always ask them). Some intel on them:
If you want further information, you should contact them.
Depending on your use case, I can also suggest looking at the Application Code Reviewer (ACR) by Mansystems. I am a bit biased since I am the product manager for ACR. It is an automated code reviewer that can help you get a better grasp of Mendix. It has a free trial. Have a look:
I hope this helps you.