Consumer Health Data Privacy Policy

Last updated: November 6, 2026

This page covers the health data Strength IO collects, as Washington’s My Health My Data Act and Nevada’s consumer health data law require. It applies alongside our full Privacy Policy. Strength IO is run by Crimson IO LLC, Georgia, United States.

Health Data We Collect

Stored on your iPhone and backed up to our servers with your account:

Read from Apple Health and kept only on your iPhone, never uploaded: heart-rate variability, resting heart rate, sleep, respiratory rate, blood oxygen, wrist temperature, VO2 Max and active energy.

Why We Collect It

Where It Comes From

From you, when you type it in the app. From Apple Health and your Apple Watch, only for the data types you allow. From your iPhone’s location, only when you allow it.

Who We Share It With

We do not sell health data. We share it only with companies that process it for us:

Mixpanel, our analytics provider, and Resend, which sends password-reset emails, receive none of the health data listed above. We have no affiliates.

Your Rights

You have the right to:

To make any other request, email support@strengthio.app. We answer within 45 days. If we turn down a request, you can appeal by replying to our answer, and we will answer the appeal within 45 days. If you are still not satisfied, you can contact your state attorney general.

Changes

When we change this page, we update the date at the top.