These builds do not write temporary files to the repaired drive, preventing cross-contamination. They run entirely from RAM.
Skepticism is healthy. Does magnetic reversal actually work?
Stick to the older, official version (v2011 or v2015) and run it via a bootable USB. The technology for mechanical drives hasn't changed much, so the old tool is still effective for the drives it supports.
The term "Extra Quality" here refers to the software's ability to recover sectors that previous versions (v2011, v2019) would have flagged as irreparable.