Terms of Use.

What Kronos is

Kronos builds personalized, measurable hydration technology. At its core is our Digital Hydration Biomarker, which uses optical physiological signals and AI to provide hydration insights through a simple digital measurement. The Kronos range includes KX2 (women's hydration), Kronos KY (men's hydration) and Kronos Sports (athletic hydration).

The App is built around a simple ritual: Scan → Drink → Scan.

Using a 30-second facial video, the App provides hydration-related wellness indicators, including hydration levels before and after a drink and the percentage change observed within a ritual. These indicators are designed to help you understand your short-term hydration response in a simple, repeatable way.

Kronos is not a medical application and does not provide medical advice, diagnosis or treatment. The Services are intended for general wellness and lifestyle awareness only, and are not intended to diagnose, cure, mitigate, treat or prevent any disease.

Account and sign-in (OTP)

To use the App, you may be asked to:

• Register with an email address
• Provide your age and sex, to put your wellness outputs in context
• Sign in with a one-time password (OTP) sent to your registered email

Rituals and results

A ritual typically includes:

1. Scan 1 (baseline): record a 30-second face scan.
2. Drink: have your beverage.
3. Wait: the second scan becomes available after an incubation period, typically about 30 minutes.
4. Scan 2 (response): record a second 30-second scan to see the before/after comparison.

Results may rise, fall or stay the same for normal reasons, including lighting, movement, time of day, stress, sleep, hydration status and individual variability. The App does not guarantee improvement in any score.

The Site and our products

The Site gives general information about Kronos, our technology and our products. Products shown as "coming soon" or "in development" are not yet available, and their features, availability and timing may change.

KX2 is available through the KX2 website. Purchases made there are subject to the terms presented on that website.

Research collaborations and API inquiries

Information about research collaborations and the Kronos Digital Hydration Biomarker API is provided for discussion only. Contacting us does not create a partnership, license or other obligation. Any collaboration or API access is governed by a separate written agreement. Please do not send us confidential information unless we have agreed in writing to receive it.

Privacy and data retention

Our data practices are described in the Kronos Privacy Policy, which forms part of these Terms. In summary, we store scan data securely for up to 90 days, and we do not sell personal data or share face data with third parties for advertising.

Account deletion

You may ask us to delete your Kronos account and/or stored scan data at any time by emailing service.hiihealth@gmail.com from your registered email address with the subject line "Account Deletion Request". Once we have verified your identity, your account and all associated data, including scan history and personal information, are permanently deleted within 30 days. See Deleting your account and scan data for the full steps.

Account deletion cannot be undone. Once your account is deleted, your data cannot be recovered.

Acceptable use

When using the Services, you agree not to:

• Scan another person without their consent
• Use the Services for any unlawful purpose
• Interfere with, disrupt or attempt to gain unauthorized access to the Services or our systems
• Copy, scrape or extract content or data from the Services by automated means

Intellectual property

All content, software, algorithms, models, designs, trademarks and branding related to Kronos, including the Kronos name and K logo, KX2, Kronos KY, Kronos Sports and "Science in Motion", are owned by HiiHealth Pte Ltd or its licensors. You may not copy, modify, distribute, sell, reverse engineer or exploit any part of the Services except as permitted by law or with our written permission.

The Services may include third-party and open-source components used under their respective licenses.

Disclaimer

Kronos outputs are for wellness tracking only and must not be used for medical decisions. Always consult a qualified healthcare professional about medical concerns. The Site and its content are provided "as is", for general information.

Limitation of liability

To the maximum extent permitted by law, HiiHealth Pte Ltd is not liable for:

• Any inaccuracies, interpretation issues or decisions made based on Kronos outputs
• Any damages arising from your use of, or inability to use, the Services
• Service interruptions, device compatibility issues or third-party dependency failures

Your use of the Services is at your own discretion and risk.

Termination

We may suspend or terminate your access if we reasonably believe you have violated these Terms or misused the Services. You may stop using the App at any time and ask for your account to be deleted, as described in the Privacy Policy.

Changes to these Terms

We may update these Terms from time to time. Updates are posted in the App and/or on the Site with a new "Last updated" date. Continuing to use the Services after a change means you accept the updated Terms.

Governing law

These Terms are governed by the laws of Singapore.