Do it yourself
Cancel Function Health yourself
TLDR: Open Change/Cancel Membership, or email hello@functionhealth.com, before it renews, and it generally ends at the close of the billing cycle. Cancel within 48 hours of the first purchase, before any sample or lab work, and they refund the fee.
Open Change/Cancel Membership
Function bills the membership.
- 01Log in at my.functionhealth.com.
- 02Open Account Settings.
- 03Open the Change/Cancel Membership page.
- 04Finish the cancel steps on that page.
You can also email hello@functionhealth.com. Do it before the membership starts or before it renews. It generally ends at the close of the billing cycle you are in. You keep the account until then. A plan bought somewhere else is cancelled with that seller. A price change is emailed. Cancel if you do not want it. Billing questions go to billing@functionhealth.com. Text STOP only ends texts.
Mail a notice
You want it on paper.
- 01Write that you are cancelling, and include the email on the account.
- 02Mail it to Function Health, Inc., Attention: Legal Dept., 600 Congress Ave, Floor 14, Austin, TX 78701.
The terms say notices and questions about the Apple app can go there. Cancel in the account too, before the renewal date.
How to know it worked
- The cancel generally starts at the end of the cycle you are in.
- You keep access until then.
Watch out for
- Renewal payments are not refunded.
- An add-on lab has its own 48-hour refund window. You do not have to cancel the membership to refund an add-on.
- Credits for add-ons expire after one year and are not cash.
Function Health refunds
- Cancel within 48 hours of the first purchase, before any sample is collected and before any lab work, and they refund the membership fee.
- After 48 hours, or after a sample or lab work, that first fee is not refunded.
- Later renewal fees are not refunded.
Sources · checked 28 October 2026
