Privacy Policy

This Privacy Policy describes how Vulti Holdings Limited ("Delta", "we", "us", or "our") handles information in connection with the Delta mobile application and the deltahealth.fit website. Please read it carefully before using the app.

Delta is a wellness product. It is not a medical device and does not provide medical advice.

1. Your data stays on your device

Delta is designed so that personal health data - including health dashboard readings, blood panel results, Adaptive Age scores, training logs, nutrition entries, mood records, journal entries, and cycle data - is stored locally on your device. We do not operate a user account system and do not maintain a server-side copy of your personal health data.

If you delete the app, your local data is deleted with it. We have no ability to restore it.

2. Stateless processing - what leaves your device and why

Certain features send data to external services for processing. In every case the processing is stateless: the service processes the request and returns a result without retaining any copy of your data.

Blood report and meal photo analysis

When you scan or upload a blood report or a meal photo, the file or image may be sent to a backend analyzer operated by or on behalf of Delta. The analyzer extracts text or nutritional information and returns structured data to the app. The original file and any intermediate data are discarded after the response is sent. Nothing is stored on the server.

This disclosure is shown in-app at the point of upload. You may also perform blood report ingestion entirely on-device using the on-device OCR fallback, in which case no data leaves your device for this step.

ASK assistant

When the ASK feature is configured and active, questions and relevant data are sent to a backend language model proxy. The proxy processes the request and returns a response. No conversation history is retained server-side after the response is delivered. What is sent is disclosed in-app before each question is submitted. ASK is inactive in unconfigured builds.

Connected health providers

Delta reads data from Apple Health (iOS) and Health Connect (Android) with your explicit permission. Data from these sources is read locally by default. When you invoke features that analyse selected health data using a configured cloud service - such as report analysis or the ASK assistant - relevant data points may be included in that request, always disclosed in-app and processed statelessly as described above.

If you connect a Withings account, Withings provides body composition data to the app through their OAuth-authenticated API. Your Withings credentials and data are governed by the Withings privacy policy. Delta reads body composition readings from Withings and stores them locally on your device only.

3. What we do not do

• We do not sell your personal data to third parties.
• We do not share your personal health data for advertising purposes.
• We do not serve third-party advertising in the app.
• We do not build advertising profiles from your health data.
• We do not use your data to train machine learning models without your explicit consent.

4. Website data

The deltahealth.fit website may collect standard server logs including IP addresses, browser type, and pages visited. This data is used only for security and operational purposes and is not linked to app usage or health data.

Product screenshots and identity images on this website are delivered through Higgsfield's CloudFront content delivery network. Loading those images sends standard request metadata, such as your IP address, browser information, and referring page, to that network. These requests are not linked to your Delta app usage or health data.

The website does not use third-party advertising cookies or tracking pixels.

5. Children

Delta is not directed at children. If you believe a child has provided personal information through our services, contact us at info@deltahealth.fit.

6. Data deletion and revocation

Because personal health data is stored locally on your device, you can delete it at any time by clearing the app's data or uninstalling the app. You can revoke Apple Health or Health Connect permissions at any time through your device's privacy settings. You can disconnect a Withings account from within the app.

For any data that may have been processed by a backend service (blood report analyzer, ASK proxy), the processing was stateless and no retained copy exists to delete. If you have questions or concerns, contact us at info@deltahealth.fit.

7. Security

Data processed by backend services is transmitted over encrypted connections (TLS). Local storage on your device is subject to the security model of your operating system and device encryption settings. We recommend keeping your device updated and using device-level encryption.

8. Changes to this policy

We may update this Privacy Policy from time to time. The effective date at the top of this page reflects when the current version took effect. Material changes will be noted in the app. Continued use of the app after a change constitutes acceptance of the updated policy.

9. Contact