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Belly

Terms of use

Last updated September 22, 2026

These terms are an agreement between you and Reasoning Labs, LLC, a Delaware limited liability company (“Belly”, “we”, “us”). They cover your use of the Belly website and app (the “Service”). By creating an account or using the Service, you agree to them. If you don’t agree, don’t use the Service.

Please read section 13. It says disputes are settled by individual arbitration, not in court or as part of a class action, unless you opt out within 30 days.

1. Belly is not an emergency service

If you think you or your baby may be in danger, call 911 or go to the nearest emergency room now. Don’t wait for an answer in Belly.

Nobody watches Belly around the clock. Questions and messages may not be read for hours or days, or at all. Warning-sign checklists and “get care now” messages in Belly are prompts to contact your care team or emergency services. They are not a substitute for doing so.

2. Belly is not your doctor

Belly is a tool for keeping your medical history, asking your own physicians questions, and tracking readings such as blood pressure.

  • Belly does not practice medicine or give medical advice. Belly, Reasoning Labs, LLC and its staff do not diagnose, treat or advise you, and using Belly does not create a doctor-patient relationship between you and Belly.
  • Physicians you add are your physicians, not ours. Anything they tell you comes from them, under their own professional judgment and responsibility. Belly does not employ, supervise or control them, and is not responsible for their advice, their response times, or whether they respond.
  • Flags and summaries are information, not decisions. Belly may show you that a published guideline may apply to you, based on answers you gave. These are prompts to talk with your physician. They can be wrong or incomplete, and they are never a reason to start, stop or change any treatment on your own.
  • Your records may be incomplete. Belly shows what you enter and what you choose to import. It is not a complete medical record, and you should not rely on it as one.

3. Who can use Belly

You must be at least 18 years old and live in the United States. Use Belly only for yourself; don’t create an account for, or enter information about, another person without their permission.

4. Your account

You sign in with a one-time code sent to your email. Keep access to your email secure: anyone who can read it can sign in as you. Tell us right away at belly@reasoninglabs.ai if you think someone has used your account.

Give accurate information. If you’re a physician, the NPI and name you verify must be your own.

5. If you’re a physician

Belly is open to verified obstetrician-gynecologists and maternal-fetal medicine specialists. If you verify as a physician, you also agree that:

  • The NPI and name you give are yours, and your license is active and in good standing. We check the public NPI registry, but that check does not make us responsible for your credentials, and we may remove your access at any time.
  • You alone are responsible for any clinical judgment, advice or care you give through Belly, for meeting the standard of care, for being licensed where your patient is located, and for your own documentation, including anything your practice or the law requires you to keep in your own records.
  • Belly is a communication tool, not an electronic health record, and it does not guarantee delivery or timeliness of any message.
  • You see a patient’s information only because she chose to share it with you. You will use it only to care for her, keep it confidential, and not copy it out of Belly except into your own medical records as your practice requires.
  • You will not use Belly to contact patients who did not invite you, or for marketing.

6. Your information

You own the information you put into Belly. You give us permission to store, process and display it only as needed to run the Service for you, as described in the Consent to Store and Use Your Health Information.

You can download all of your information, or delete your account and everything in it, at any time from Settings. We don’t sell your information and don’t use it for advertising.

7. Acceptable use

Don’t:

  • use Belly for anyone else’s health information without permission;
  • impersonate anyone, including claiming another physician’s NPI;
  • try to reach information you weren’t given access to, probe or test our security without written permission, or disrupt the Service;
  • scrape, copy or resell the Service, or use it to build a competing product;
  • upload anything unlawful, harassing or harmful.

We may suspend or close accounts that break these terms.

8. Connected services

You can choose to import records from your health system, for example through Epic MyChart. That connection is between you and your health system, under their terms. We read your records once, when you ask, and we are not responsible for what they contain or for the other service’s availability.

9. Changes to Belly and to these terms

Belly is new and will change. We may add, change or remove features, or stop the Service, with reasonable notice where we can. If we stop the Service, we will give you a chance to download your information first.

If we change these terms in a way that matters, we’ll ask you to accept the new version before you continue. The version you accepted, and when, stays on record.

10. Fees

Belly is currently free for patients. If we introduce paid features, we will show the price and ask you to agree before you’re charged.

11. Disclaimers

To the fullest extent the law allows, the Service is provided “as is” and “as available”, without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. We don’t promise the Service will be uninterrupted, error-free or secure, or that any information in it is accurate or complete.

12. Limits on liability

To the fullest extent the law allows:

  • We are not liable for any indirect, incidental, special, consequential or punitive damages, or for lost data, profits or revenue, arising from or related to the Service or these terms.
  • We are not liable for the acts, omissions, advice or care of any physician or health system, including physicians you add to your care team.
  • Our total liability for all claims relating to the Service is limited to the greater of the amount you paid us in the 12 months before the claim or US $100.

Some laws don’t allow some of these limits. Where that’s so, they apply only as far as the law allows. Nothing in these terms limits liability that cannot be limited by law.

If you’re a physician, you agree to defend and indemnify Belly against claims arising from the care or advice you give through the Service or from your breach of section 5. Anyone else agrees to do the same for claims arising from their breach of section 7.

13. Disputes: arbitration and class action waiver

Try us first. Before filing a claim, email belly@reasoninglabs.ai and give us 30 days to try to resolve it.

Arbitration. Any dispute between you and Belly relating to the Service or these terms will be resolved by binding individual arbitration administered by the American Arbitration Association under its Consumer Arbitration Rules, except that either of us may bring an individual claim in small claims court, and either of us may ask a court to stop infringement or misuse of intellectual property. The Federal Arbitration Act governs this section.

No class actions. You and Belly each agree to bring claims only individually, not as a plaintiff or class member in any class, collective or representative proceeding.

Opting out. You can opt out of this section within 30 days of first accepting these terms by emailing belly@reasoninglabs.ai with your name and the email on your account.

14. Ending

You can stop using Belly and delete your account at any time. We may suspend or end your access if you break these terms, if the law requires it, or if we stop the Service. Sections 2, 6, 11, 12, 13 and 15 survive.

15. General

These terms are governed by the laws of the State of Delaware, without regard to conflict-of-law rules, except as section 13 provides. They, with the documents they refer to, are the whole agreement between us about the Service. If part of them is unenforceable, the rest still applies. Our not enforcing a term is not a waiver. You may not transfer these terms; we may transfer them in a merger, acquisition or sale of assets, with notice to you.

Questions: belly@reasoninglabs.ai.