Here is a comparison of the two. As of the date of this post pricing is to be determined. The Plus version though will be roughly $100 more than the standard.
The Standard version will include Mech-Q and 2D/3D .
Here is what you get on addition to this with AViCAD Plus :
Here is a 4 minute video to explain some of the features you will find inside AViCAD 2021
Purchased or upgraded AViCAD before April 15th, 2020? Upgrade today and receive early bird pricing.