Hi millineryhub ,
Thanks for you post.
What do you mean? Would you be so kind as to specify which features you are looking for?
ATUM Free doesn't change the way WooCommerce manages the stock. ATUM Free allows users to manage it easily from Stock Central in a single view. You can change stock, prices, and additional fields created by ATUM. You can read more about Stock Central here.
Best Regards,
José Andrés