Does Dex have a free version?

Excuse me, I was wondering if I could get some clarification on the pricing structure for Dex. Specifically, I'm interested in knowing if Dex offers a free version of their platform or service. I understand that many cryptocurrency and finance-related tools offer a basic, no-cost option for users to try out before committing to a paid subscription. Is this the case with Dex as well? If not, could you please provide some information on the pricing tiers and what features are included in each? Thank you for your time and assistance.