When you order a free domain from freenom you’ll be acting as a user of the domain and not a licensee, which is true. Although, their limitations are that you can’t transfer the domain and Freenom can cancel your domain if it does not comply with their Free domain name policy and dot.tk policy.
Anyhow, they do not remain the right to perform any actions against user-interaction, or in other words, they will- and can not put content on your site, make your domain redirect to some other place, etc. That is completely under your control.
EDIT: A licensee of a domain basically means you are the sole owner of the domain, and have full right to do as you wish with it (as long as it comply with the registrar’s policies and ICANN policies). A user of some domain means that you do not own the domain, but you remain the right to control the domain in certain areas.