These Terms of Service ("Terms") form a binding agreement between you and Kimya Labs LLC ("Kimya Labs," "we," "us," or "our") and govern your access to and use of the Ruya Health product family:

• ruyahealth.com — our marketing site
• app.ruyahealth.com — our consumer health-education chat application
• platform.ruyahealth.com — our enterprise platform's public-facing pages

By accessing or using any of the services, you agree to these Terms. If you do not agree, do not use the services.

Enterprise customer access to platform.ruyahealth.com after a sales contract is signed is governed by a separate Master Services Agreement (MSA), which prevails in the event of a conflict.

1. Eligibility

To use the consumer services, you must:

• Be at least 18 years of age
• Have the legal capacity to enter into a contract
• Not be barred from receiving services under applicable US law

The services are operated from and intended for use in the United States. We make no representation that the services are appropriate or available outside the United States.

2. Your account

2.1 Creating an account

You may create one personal account. When you create an account, you agree to:

• Provide accurate, current, and complete information
• Maintain and update that information as needed
• Verify your email address (the consumer app requires email verification before you can sign in for the first time)
• Keep your password confidential and use a unique password for the service

2.2 Account security

You are responsible for all activity that occurs under your account. If you suspect unauthorized access:

• Change your password immediately
• Email support@ruyahealth.com so we can investigate and, if appropriate, sign out other active sessions

We use industry-standard methods to secure authentication, but no system is perfect. We are not liable for losses resulting from unauthorized access where you failed to protect your password or respond promptly to suspicious activity.

2.3 Account ownership

Accounts are personal to you. You may not share your account with others, sell or transfer it, or create accounts on behalf of someone else without their consent.

3. Acceptable use

You agree not to:

1. Use the services for any unlawful purpose or in violation of these Terms
2. Use the services to give medical advice to others, practice medicine, or hold yourself out as a healthcare provider
3. Reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code of the services
4. Use automated tools (bots, scrapers, headless browsers) to interact with the services
5. Circumvent or attempt to circumvent rate limits, including the consumer chat limit (currently 20 AI messages per day per account, subject to change)
6. Use the services or any data extracted from them to develop, train, or improve a competing AI service or product
7. Upload or transmit malware, viruses, or other harmful code
8. Conduct security testing or penetration testing without our prior written authorization (responsible vulnerability reports are welcome at security@ruyahealth.com)
9. Send spam, phishing attempts, or harassing content through the services
10. Enter personally identifying information about yourself or others beyond what is requested (do not paste medical records, lab results, claims data, or insurance documents into the chat)
11. Use the services in a way that violates the rights of others, including intellectual property and privacy rights

We may suspend or terminate accounts that violate Section 3.

4. User content

4.1 What is User Content

"User Content" means the information you submit to the services, including your health profile entries, chat messages, and AI responses returned to you.

4.2 Ownership

You retain ownership of your User Content.

4.3 License you grant us

You grant Kimya Labs a worldwide, non-exclusive, royalty-free, sublicensable license to host, store, process, transmit, modify (solely as needed to display or back up), and display your User Content solely for the purpose of providing, maintaining, and securing the services to you.

This license does NOT permit us to use your User Content to train any machine-learning model, to share with advertisers, or for any purpose other than operating the services.

4.4 Your representations

You represent and warrant that:

• You have the right to submit your User Content
• Your User Content does not violate any third party's intellectual property, privacy, or publicity rights
• Your User Content does not contain malware or violate any law

4.5 AI-generated content

Responses generated by our AI provider are made available to you under a non-exclusive license for your personal, non-commercial use. The AI provider (Anthropic) retains intellectual property rights to its model; we sublicense the AI responses to you to the extent we are permitted to.

You acknowledge that AI-generated responses may overlap with responses generated for other users with similar inputs and that we make no claim of originality, uniqueness, or copyrightability of AI responses.

5. Intellectual property

Other than User Content, Kimya Labs and its licensors retain all rights, title, and interest in and to the services, including:

• The software code, designs, and architectures underlying the services
• The "Ruya Health" and "Kimya Labs" trademarks and brand assets
• Documentation, marketing copy, and other content on ruyahealth.com

We grant you a limited, non-exclusive, non-transferable, revocable license to access and use the services for your personal, non-commercial purposes, subject to these Terms.

You may not use our trademarks or brand assets without our prior written permission, except for descriptive references in editorial or journalistic contexts.

6. Free service; pricing changes

The consumer services at app.ruyahealth.com are currently provided free of charge. We reserve the right to:

• Add new paid tiers or features at any time
• Convert previously free features to paid features, with at least 30 days' advance notice via email and an in-app banner
• Pause or discontinue specific features with reasonable notice

Features in use by your account at the time of a pricing change will continue to be available at the same access level until the change takes effect.

Enterprise pricing for platform.ruyahealth.com is governed by the relevant MSA.

7. Modifications to the service

We may at any time:

• Add or remove features
• Adjust rate limits or quotas
• Change the AI provider or model that powers the chat
• Update designs and user interfaces
• Suspend or discontinue the service in whole or in part

Material changes that adversely affect your use of the service will be communicated by email or in-app banner at least 14 days in advance where reasonably feasible.

8. Suspension and termination

8.1 By you

You may delete your account at any time via Profile → Danger Zone → Delete my account, or by emailing support@ruyahealth.com. Deletion is permanent and removes your data from active systems immediately. Encrypted backups expire within 35 days, as described in our Privacy Policy.

8.2 By us

We may suspend or terminate your account if:

• You materially breach these Terms
• You engage in fraud, abuse, or activity that threatens the security or integrity of the services
• We are legally required to do so
• Your account is inactive for more than 24 consecutive months (subject to email notice before any deletion)
• We discontinue the services in whole

We will provide reasonable notice except in cases of security or legal urgency.

8.3 Effect of termination

Upon termination:

• Your right to use the services ends immediately
• Sections 4, 5, 9–17, and 19 survive (User Content rights, intellectual property, disclaimers, limitation of liability, indemnification, governing law, dispute resolution)

9. Disclaimer of warranties

THE SERVICES ARE PROVIDED "AS IS" AND "AS AVAILABLE."

To the maximum extent permitted by law, Kimya Labs disclaims all warranties, express or implied, including (but not limited to):

• Merchantability
• Fitness for a particular purpose
• Non-infringement
• Accuracy or completeness of AI-generated content
• Uninterrupted, secure, or error-free operation

No oral or written information obtained from Kimya Labs or the services creates a warranty not expressly stated in these Terms.

Some jurisdictions do not permit disclaimer of certain implied warranties. In those jurisdictions, the disclaimers above apply to the maximum extent permitted by law.

10. Limitation of liability

To the maximum extent permitted by law:

• KIMYA LABS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, including lost profits, lost data, loss of goodwill, or business interruption, regardless of the legal theory under which the claim arises and regardless of whether we were advised of the possibility of such damages
• KIMYA LABS' AGGREGATE LIABILITY for all claims arising out of or relating to these Terms or the services will not exceed ONE HUNDRED U.S. DOLLARS ($100)

Nothing in this Section 10 limits liability that cannot be excluded under applicable law, including liability for fraud, gross negligence, or willful misconduct.

The parties agree that this limitation is a fundamental basis of the bargain and would not be willing to provide the services to you without it.

11. Indemnification

You agree to indemnify, defend, and hold harmless Kimya Labs and its officers, directors, employees, contractors, and agents from and against any claim, demand, loss, damage, liability, cost, and expense (including reasonable attorneys' fees) arising out of or relating to:

• Your breach of these Terms
• Your use of the services
• Your User Content
• Your violation of any third party's rights or applicable law

We reserve the right, at our own expense, to assume the exclusive defense and control of any matter subject to indemnification, in which case you will cooperate with our defense.

12. Governing law

These Terms are governed by the laws of the Commonwealth of Massachusetts, without regard to its conflict-of-laws principles.

We acknowledge that the Massachusetts Consumer Protection Act (M.G.L. c. 93A) may provide rights and remedies to Massachusetts consumers that cannot be waived. Nothing in these Terms purports to waive those rights.

13. Informal dispute resolution

Before initiating arbitration or court proceedings (other than small claims), you and Kimya Labs agree to attempt to resolve disputes informally:

1. Email support@ruyahealth.com with a written description of the dispute and the relief you seek
2. We will respond within 30 days
3. The parties will negotiate in good faith for an additional 30 days
4. If unresolved after that period, either party may proceed under Section 14

14. Arbitration; class action and jury trial waiver

Please read this section carefully. It affects your rights.

14.1 Binding individual arbitration

Any dispute arising out of or relating to these Terms or the services that is not resolved through Section 13 must be resolved by binding individual arbitration administered by the American Arbitration Association ("AAA") under its Consumer Arbitration Rules then in effect.

The arbitration will be conducted by a single arbitrator in Boston, Massachusetts, or virtually by mutual agreement. Each party will bear its own attorneys' fees and arbitration costs, except as otherwise required by law or AAA rules.

The arbitrator's decision is final and binding and may be entered as a judgment in any court of competent jurisdiction.

14.2 Class action waiver

You and Kimya Labs each waive the right to bring or participate in a class action, class arbitration, mass action, or any other representative proceeding related to the services or these Terms, to the maximum extent permitted by law.

14.3 Jury trial waiver

To the extent any dispute proceeds in court rather than arbitration, the parties waive any right to a jury trial.

14.4 Small claims exception

Notwithstanding Sections 14.1–14.3, either party may bring an individual action in small-claims court located in Massachusetts so long as the action remains in that court and on an individual (non-class, non-representative) basis.

14.5 30-day opt-out

You may opt out of Section 14 (Arbitration; class action waiver; jury trial waiver) by emailing support@ruyahealth.com within 30 days of first accepting these Terms with the subject line "ARBITRATION OPT-OUT". Your opt-out must include your account email and a clear statement of intent to opt out. Opting out does not affect any other provision of these Terms, and your account remains active.

14.6 Two-year limitation

Any claim arising out of or relating to these Terms or the services must be brought within two (2) years of the event giving rise to the claim, to the maximum extent permitted by law.

15. Electronic communications

By creating an account, you consent to receive electronic communications from Kimya Labs, including transactional emails (account verification, password reset, security notifications, material policy updates), and you agree that such electronic communications satisfy any legal requirement that communications be in writing.

You may opt out of non-essential marketing emails at any time using the unsubscribe link in those emails. You cannot opt out of service-related transactional emails while your account is active.

16. Copyright complaints

We respect intellectual property rights. If you believe that content available through the services infringes your copyright, send a notice that meets the requirements of 17 U.S.C. § 512(c)(3) to support@ruyahealth.com with the subject "DMCA NOTICE".

We will respond to valid notices in accordance with the Digital Millennium Copyright Act.

17. Privacy

Your use of the services is also governed by our Privacy Policy, which describes how we collect, use, and share information about you.

18. Changes to these Terms

We may update these Terms from time to time. When we do, we will update the "Last updated" date at the top.

For material changes, we will provide at least 14 days' advance notice via email and an in-app banner. Continued use after the effective date of a material change constitutes acceptance.

If you do not accept a material change, you may close your account before the effective date and the change will not apply to your prior use.

19. General provisions

19.1 Entire agreement

These Terms, together with the Privacy Policy and any additional agreements you enter with us, constitute the entire agreement between you and Kimya Labs regarding the services.

19.2 Severability

If any provision of these Terms is held unenforceable, the remaining provisions remain in effect.

19.3 No waiver

Our failure to enforce any provision is not a waiver of our right to enforce it later.

19.4 Assignment

You may not assign or transfer these Terms or any rights under them without our prior written consent. We may assign these Terms to a successor entity (for example, in connection with a merger, acquisition, or sale of assets) without your consent.

19.5 No third-party beneficiaries

These Terms create rights only for you and Kimya Labs and do not confer rights on any third party, except that our sub-processors are intended beneficiaries of Section 4.3 (license to User Content) only to the extent necessary to provide their services to us.

19.6 Force majeure

Neither party is liable for failure or delay caused by events beyond its reasonable control, including natural disasters, war, terrorism, strikes, internet outages, or government action.

19.7 Notices to you

We may give notice to you by email to the address on your account, by in-app banner, or by posting on ruyahealth.com.

19.8 Notices to us

Legal notices to Kimya Labs must be sent by email to support@ruyahealth.com with the subject "LEGAL NOTICE", and (for formal service of process once the entity is registered) by certified mail to the mailing address in Section 20.

20. Contact