Is Revv free?

Excuse me, I'm just wondering about the pricing model for Revv. Could you please clarify if Revv is a free service, or does it come with any associated costs? I'm particularly interested in understanding if there are any initial investments, transaction fees, or recurring charges that users might have to consider when utilizing Revv. Additionally, if there are any promotions or discounts currently available, I'd appreciate any information you can provide on that as well. Thank you for your time and assistance.