Terms of Use

These Terms of Use ("Terms") govern your access to and use of the Delta mobile application and the deltahealth.fit website, operated by Vulti Holdings Limited ("Delta", "we", "us", or "our"). By using Delta you agree to these Terms. If you do not agree, do not use the app or website.

1. What Delta is - and is not

Delta is a wellness application. It is not a medical device, a clinical diagnostic tool, or a provider of medical advice. Nothing in the app or on this website constitutes a diagnosis, treatment recommendation, prescription, or clinical opinion.

The Adaptive Age (PhenoAge) is a research-derived wellness metric based on Levine et al. 2018. It is an informational output, not a clinical measurement. Consult a qualified healthcare professional before making decisions about your health based on any data Delta presents.

Delta does not replace professional medical care. If you are experiencing a medical emergency, contact emergency services immediately.

2. Access requirements

You must meet any minimum age requirements under applicable law in your region to enter into a binding agreement. The 48-hour fast DYNAMICS protocol within the app is subject to an additional hard safety screen, including an age restriction. By using Delta you represent that you are permitted to do so under applicable law.

3. Your data and local storage

Personal health data you enter into or import into Delta is stored on your device. We do not maintain server-side copies of your health data. Certain features - blood report analysis and meal photo analysis - use stateless backend processing as described in the Privacy Policy. The ASK assistant uses a stateless backend proxy when configured.

You are responsible for backing up your device if you wish to preserve locally stored data. Uninstalling the app removes locally stored data permanently.

4. Acceptable use

You agree not to:

• Use Delta for any unlawful purpose or in violation of any applicable law.
• Attempt to reverse-engineer, decompile, or extract source code from the app.
• Use automated tools to access or scrape the app or website.
• Misrepresent Delta's outputs as clinical, diagnostic, or medical results.
• Share access to or distribute any access-restricted version of the app.
• Use Delta in a manner that could harm others, including by relying on it for emergency medical decisions.

5. Connected services and third-party providers

Delta integrates with Apple Health, Health Connect, and Withings with your permission. Your use of those services is governed by their respective terms and privacy policies. Delta is not responsible for data, availability, or practices of third-party services.

If the ASK feature is enabled in your build, it routes through a configured backend proxy. The proxy may be operated by a third party. Usage of that service is subject to its own terms. ASK is inactive in unconfigured builds.

6. Availability and changes

Delta is provided on an "as is" and "as available" basis. We do not guarantee continuous availability or that the app will be free of errors. We may modify, suspend, or discontinue any feature or the app itself at any time without prior notice.

Access to the app is currently by request and is not generally available on the App Store. Availability may change without notice.

7. Intellectual property

The Delta name, logo, app design, and all content on this website are owned by or licensed to Vulti Holdings Limited. You may not reproduce, distribute, or create derivative works from any part of Delta without our written permission.

You retain ownership of health data you enter into the app. By using features that involve stateless backend processing, you grant us a limited, transient licence to process that data solely to provide the feature. No other licence to your data is granted.

8. Disclaimer of warranties

To the fullest extent permitted by applicable law, Delta is provided without warranties of any kind, express or implied, including fitness for a particular purpose, accuracy, completeness, or non-infringement. Delta makes no warranty that its outputs are medically accurate, clinically validated, or suitable for any health decision.

9. Limitation of liability

To the fullest extent permitted by applicable law, Vulti Holdings Limited and its officers, directors, employees, and agents will not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of Delta, including loss of data, health outcomes, or reliance on app outputs.

Nothing in these Terms limits liability for death or personal injury caused by our negligence, fraud, or any other liability that cannot be excluded by applicable law.

10. Changes to these Terms

We may update these Terms from time to time. The effective date above reflects the current version. Material changes will be communicated in-app. Continued use of Delta after a change constitutes acceptance of the updated Terms.

11. Contact