Hey, I left a comment in another thread about the differences:

https://news.ycombinator.com/item?id=39732135

Didn't know about OpenRefine - but one major difference is Pretzel is web-based meaning no installation necessary (important for work laptops, for eg). We're also going to be adding a ton of features to this - think Jupyter notebooks crossed with Metabase crossed with Datasette/Pretzel.

Thanks for the reply. I thought I'd made some obvious error when I asked and was getting downvoted without comment. I appreciate you time in replying to what may have been a stupid question.