Ren

Privacy Policy

Last updated: September 8, 2026

Front Back Labs Inc. ("Ren," "we," "us") operates the Ren consumer wellness app, ren.so, and related services (the "Service"). This policy describes how we handle personal information in the United States.

Information we collect

We collect:

  • account and contact information, such as your name, email address, and authentication identifiers;
  • profile and health information you enter, such as age, sex, height, weight, goals, symptoms, supplements, sleep, mood, and notes;
  • experiment information, including hypotheses, protocols, interventions, adherence, ratings, and results;
  • information you authorize us to receive from Apple Health, wearables, or other connected services, such as activity, heart rate, heart-rate variability, sleep, and workouts;
  • health insights and inferences generated from this information;
  • communications you send us;
  • device, log, and usage information, such as IP address, device and app details, pages or features used, and diagnostic data; and
  • a referral cookie set when you open someone's invite link to ren.so, used only to credit that person if you join the waitlist within 30 days.

We receive this information from you, your device, services you connect, and our service providers.

How we use information

We use information to operate the Service, run and interpret your experiments, generate AI-assisted responses, communicate with you, maintain and secure the Service, and comply with law. AI output is informational and is not medical advice.

We use HealthKit information only to provide health and fitness features. We do not use or disclose HealthKit information for advertising, marketing, or sale.

How we disclose information

We disclose information:

  • to providers that support hosting, databases, AI processing, analytics, communications, and customer support;
  • to connected services when you direct us;
  • when required by law or needed to protect rights and safety; and
  • as part of a merger, financing, acquisition, or sale of assets.

The consumer health data described above may be disclosed to these same categories of recipients. We have no affiliates with which we share consumer health data. Recipients may process information in the United States. Their own policies apply when you use their services.

Retention and security

We retain information for as long as needed for the purposes above, including legal and operational needs. We use reasonable safeguards, but no system is completely secure.

Your choices and rights

You can disconnect connected services and unsubscribe from marketing messages. Depending on your state, you may also have rights to access, correct, delete, or obtain a copy of your information, or to withdraw consent. Email privacy@ren.so to make a request. We may verify your identity and will respond as required by law.

For consumer health data, you may also ask whether we collect, share, or sell it; request a list of recipients; or withdraw consent to its collection or sharing. If we deny a consumer health data request, you may appeal by emailing privacy@ren.so with the subject "Health Data Appeal." If your appeal is denied, you may contact the Washington State Attorney General.

Children

The Service is for adults and is not directed to anyone under 18. Contact us if you believe a child has provided personal information.

Changes and contact

We may update this policy and will post the updated version here. Questions may be sent to privacy@ren.so.