Terms of Service

Welcome to Stack. By accessing or using our website, health assessment, subscription service, or any related services, you agree to be bound by these Terms of Service.

Eligibility: You must be at least 18 years old to use Stack. Our supplements and health assessment are not intended for minors. By creating an account, you represent that you meet this age requirement.

Health Disclaimer: Stack provides personalized supplement recommendations based on your self-reported health data and optional blood biomarker testing. Our service is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before starting any new supplement regimen.

Subscription: By subscribing, you authorize us to charge your payment method on a recurring monthly basis. You may cancel or pause your subscription at any time through your account dashboard. Changes take effect at the start of your next billing cycle.

Intellectual Property: All content on this website — including text, design, logos, and recommendation algorithms — is the property of Stack and is protected by applicable intellectual property laws.

Limitation of Liability: Stack is not liable for any adverse health effects resulting from supplement use. Our maximum liability is limited to the amount you paid for the service in the preceding 12 months.

Governing Law: These terms are governed by the laws of the State of Delaware, without regard to conflict of law principles.