1. Acceptance of Terms

By accessing or using ReasonDx (available at reasondx.com and associated subdomains), you agree to be bound by these Terms of Service ("Terms"). If you do not agree, please do not use the platform. These Terms apply to all visitors, registered users, and contributors.

We may update these Terms from time to time. Continued use of the platform after changes are posted constitutes acceptance of the revised Terms.

2. Description of Service

ReasonDx is a clinical reasoning education platform designed for medical students, residents, fellows, and physician educators. The platform provides:

• AI-assisted virtual patient cases and clinical simulations
• Board review question generation (StudyDx)
• Pathophysiology learning modules (MechanismDx)
• A peer-reviewed content library (Content Library)
• Faculty tools for clinical skills curriculum development

ReasonDx is an educational tool only and is not a clinical decision support system. See Section 9 (Medical Disclaimer) for full details.

3. User Accounts & Eligibility

You must be at least 18 years of age to create an account. By registering, you represent that all information you provide is accurate and that you will maintain its accuracy.

You are responsible for maintaining the confidentiality of your account credentials and for all activity that occurs under your account. You agree to notify us immediately of any unauthorized use at support@reasondx.com.

4. Subscriptions & Payments

ReasonDx offers a free (Freemium) tier and a paid Pro tier ($14.99/month or $99/year). Payments are processed securely via Stripe. By subscribing, you authorize recurring charges to your payment method.

• Cancellation: You may cancel at any time. Access continues through the end of the current billing period. No refunds are issued for partial periods.
• Referral Program: Referral credits are applied to your account as described in the referral program terms. Credits have no cash value.
• Price Changes: We will provide at least 30 days' notice of any price changes.

5. User-Generated Content

5a. Your Responsibility

This includes content you paste into the StudyDx MCQ generator, case builder, or any other input field. ReasonDx does not review user-inputted content before processing and cannot verify that your inputs comply with third-party licenses.

5b. Private vs. Public Use

Content you generate for your personal private library only is your own study material and is not distributed by us. You bear responsibility for ensuring your inputs comply with the license terms of any source material you use.

Content you submit to the Public Library must come from sources that permit commercial use and derivative works — specifically CC BY licensed articles or U.S. Government publications (public domain). Submissions based on CC BY-NC, CC BY-ND, or proprietary sources will be rejected or removed.

5c. License Grant

By submitting content to the Public Library, you grant ReasonDx a non-exclusive, royalty-free, worldwide license to display, distribute, and use that content within the platform. You retain ownership of content in your personal library.

5d. What We Do With Your Inputs

Text you input into the MCQ generator or case builder is sent to our AI processing pipeline to generate educational content. We do not:

• Use your private inputs to train AI models
• Store your inputs for purposes beyond generating the requested output
• Share your private library content with other users

See our Privacy Policy for full details.

6. Intellectual Property

All platform content created by ReasonDx — including case architectures, clinical reasoning frameworks, pathophysiology modules, the CaseFrame system, ReasoningPathway Fingerprinting methodology, and all associated software — is the intellectual property of ReasonDx and its creator. All rights reserved.

You may not copy, reproduce, distribute, modify, or create derivative works from ReasonDx platform content without express written permission.

7. Copyright & Open Access Policy

Our Commitment

ReasonDx is committed to using only legally permissible source material in its platform content. Our sourcing policy requires:

• Direct links are only provided to sources that are CC BY licensed or U.S. Government publications (public domain)
• Restricted sources (Elsevier, Wiley, NEJM, JAMA, and similar proprietary publishers) are cited as plain-text "Suggested Reading" references without hyperlinks
• The platform's Source Guardian system automatically enforces these rules in real time

For Users Submitting to the Public Library

Safe Sources for Public Submissions

• ✅ BioMed Central journals (CC BY)
• ✅ PLOS journals (CC BY)
• ✅ eLife (CC BY)
• ✅ NIH, CDC, AHRQ, FDA publications (U.S. Government — public domain)
• ✅ Any article with a confirmed CC BY license

8. DMCA Safe Harbor

If you believe that content on ReasonDx infringes your copyright, please submit a written notice to our designated DMCA agent containing:

1. Your physical or electronic signature
2. Identification of the copyrighted work you claim has been infringed
3. Identification of the material on our platform that you claim is infringing, with sufficient detail for us to locate it
4. Your contact information (address, telephone, email)
5. A statement that you have a good faith belief that the use is not authorized by the copyright owner, its agent, or the law
6. A statement that the information in your notice is accurate, and under penalty of perjury, that you are authorized to act on behalf of the copyright owner

Upon receiving a valid DMCA notice, we will expeditiously remove or disable access to the allegedly infringing content. We will also notify the user who posted the content, who may submit a counter-notification if they believe the removal was in error.

Counter-Notification: If you believe content was removed in error, you may submit a counter-notification to our DMCA agent. We will restore the content within 10–14 business days unless the complaining party files a court action.

Repeat Infringers: We will terminate the accounts of users who are determined to be repeat infringers.

9. Medical Disclaimer

All clinical cases, questions, pathophysiology content, and AI-generated responses are created for educational purposes only. They may not reflect the most current clinical guidelines, may contain errors, and do not constitute medical advice.

Always consult qualified clinical supervisors, current literature, and institutional protocols for patient care decisions. ReasonDx assumes no liability for clinical decisions made based on platform content.

10. Privacy & Data

Your use of ReasonDx is also governed by our Privacy Policy, which is incorporated into these Terms by reference. Key points:

• We collect account information, usage analytics, and performance data to improve the platform
• We do not sell your personal data to third parties
• Private library content remains private to your account
• AI-generated content inputs are processed transiently and not stored as training data

11. Prohibited Uses

You agree not to use ReasonDx to:

• Upload content that infringes third-party intellectual property rights
• Attempt to reverse-engineer, scrape, or reproduce platform content at scale
• Share login credentials or allow unauthorized access to paid features
• Use the platform for commercial purposes other than those expressly permitted
• Submit false, misleading, or fabricated clinical content to the public library
• Harass, impersonate, or harm other users

12. Termination

We may suspend or terminate your account at our discretion if you violate these Terms. You may terminate your account at any time by contacting support. Upon termination, your access to paid features ends and personal library data may be deleted after 90 days.

13. Disclaimers & Limitation of Liability

THE PLATFORM IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMITTED BY LAW, REASONDX DISCLAIMS ALL WARRANTIES INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

IN NO EVENT SHALL REASONDX BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING FROM YOUR USE OF THE PLATFORM, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. OUR TOTAL LIABILITY SHALL NOT EXCEED THE AMOUNT YOU PAID IN THE TWELVE MONTHS PRECEDING THE CLAIM.

14. Governing Law

These Terms are governed by the laws of the State of Florida, without regard to conflict of law principles. Any disputes shall be resolved in the state or federal courts located in Broward County, Florida.

15. Contact