Is Ardour 7 free?

Excuse me, I'm interested in learning more about Ardour 7. Could you please clarify whether this software is available for free? I've heard it's a powerful tool in the finance and cryptocurrency sector, and I'm wondering if there's a cost associated with its use. Additionally, I'd appreciate any insight into its features and compatibility with other platforms or tools in this industry. Thank you for your time and assistance in clarifying this matter.