You also have a limit of liability for the actual amount paid to you over the last 12 months (for a free service, this is $0), and on top of that a pretty broad indemnity clause.
Depending on your target audience, I think a pay for option at the lowest tier would help, as at least then I'm not left wondering how you make money and if you plan on selling data to advertising partners as a "related service".
From a design and functionality standpoint I appreciate the simple slick design and feature set. It focuses on the core need without feature bloat. Best of luck!