I hope that the subscription fee allows the developers to update the features and analysis more effectively.
Personally, I like the functionality and accuracy of the software. It's doable, but a thick piece of code to work through with nuance. The other option is programming Annex D with the manufacturer's data. I've had some issues running the program, though. You can get the DDA for free and check Hiltis along with Dewalt anchors. But it saves old design templates and also can check plate stresses. My only beef with Profis is that it loads slow initially. If you stop the maintenance fee, the developer usually makes you buy the program again if it is more than 1-2 versions out.
But every company has been tacking on yearly maintenance fees so you can upgrade and enhance.
So any design documentation needs to be printed and explicit, otherwise you'll lose all the work if you drop your subscription. Subscription fees always seem annoying because you don't own the software.
