I continuously upload products. I need to create a category like "Shoes" and set a condition in a true/false way where if an attribute is shoes, sneakers, boots, sandals as a value it automatically gets added to that category.
right now I can manually select products for a category but that's it, it doesn't dynamically happen with conditions
Your request is quite interesting. I don't know such a module but I can suggest an alternative - Mass Product Actions mod. It will let you assign categories (and complete many other product management tasks) in bulk, so it'll definitely save your time.
Hope that helps!
There is the app - Store Manager for Magento, using it you can assign categories on-the-fly right during import, applying special conditions rules.
For example, using your case the formula will be
CASE WHEN (([CSV_COL(5)]='boots') OR ([CSV_COL(5)]='sandals') OR ([CSV_COL(5)]='sneakers')) THEN 'Default Category|Shoes' ELSE 'Default Category|Other' END
where instead of 5 you put number of column with your attribute and in formula itself place values.
You can check free 14-day trial version of the app (download it from my signature) to check how import works. If any questions occur, we have free support.