About the license

The personal/independent license is the free license granted to those who wish to use UBuild and agree that their usage of the software is non-commercial in nature and does not take place in a commercial capacity in any shape or form.

Upon agreeing, the user will immediately gain access to all aspects of UBuild. The personal/independent license is granted to ensure fair and free access to the tool to all those interested in learning about video game development, allowing fair access to industry-standard tooling.

It's strictly forbidden to use UBuild with a personal/independent license to produce products which are intended to be sold. 
To do this; you must receive a commercial license (see more here).