καιρός · the right moment

Privacy Policy

Effective Date: January 1, 2026 · Last updated: July 2, 2026

Your health data is yours, and we never see it. This Privacy Policy explains how Kairos, operated by Neuralway Technologies Private Limited ("Neuralway", "we", "us", "our"), handles your information. The short version: Kairos computes everything on your iPhone and Apple Watch; your health data is never sent to Kairos, and we operate no server that can read it. If you enable iCloud, your data syncs only through your own private iCloud account, which we cannot access. There is no account to create. The single, explicitly consented exception is Bloodline: if you choose to have a lab report read, it passes encrypted through our server to an AI transcription service and is never stored along the way — see Section 3.

1. On-Device by Design, Synced Through Your Own iCloud

Every reading, score, baseline, and verdict that Kairos produces is calculated locally on your device. Your health and fitness data — including heart-rate variability, resting heart rate, sleep, breathing rate, and wrist temperature — is read from Apple HealthKit with your explicit permission and is processed entirely on-device. It is never uploaded to Neuralway, and we operate no server that stores or can read your health data.

So a new phone or a reinstall picks up where you left off, Kairos keeps your profile and preferences (such as your name, age, focus, reminder times, and settings) in your own private iCloud account, using Apple's iCloud storage. This lives in your personal iCloud, governed by your Apple account; Neuralway has no access to it and cannot read it. Your health data itself is never copied there by Kairos — it stays in Apple Health, which Apple keeps in sync across your own devices through iCloud. If you turn iCloud off, everything stays on your device alone. In every case, your health data is never sent to Kairos.

2. Health Data and Apple HealthKit

Kairos requests read access to specific HealthKit data types solely to generate your recovery insights. You control exactly which data types Kairos may read, and you can grant or revoke this access at any time in the Apple Health app or in iOS Settings. In accordance with Apple's requirements, Kairos does not use HealthKit data for advertising, marketing, or other use-based data mining, and does not share HealthKit data with any third party. Data obtained through HealthKit stays under your control — on your device and, if you enable iCloud, in your own private iCloud — and is never sent to Neuralway.

3. Bloodline: Lab Reports You Choose to Share

Bloodline is an optional feature that reads a blood-test report you already have (a PDF or photos) and organizes its markers on your iPhone. Because transcribing a lab report requires more than your phone can do alone, this is the one thing Kairos ever sends off your phone — and nothing is uploaded until you have reviewed a consent screen that says so plainly and have explicitly agreed, each time.

Here is exactly what happens when you agree: the pages of your report are sent, encrypted in transit, from your iPhone through our own server (hosted on Amazon Web Services) to an AI service operated by Anthropic that transcribes them. The report is read once and never stored along the way — our server holds no copy, keeps no log of its contents, and the AI provider processes it transiently for transcription only; it is not used for advertising, profiling, or training. The pages and the transcribed results come straight back to your iPhone, and the results live only there (and, like the rest of Kairos, are never synced to any Neuralway server). Deleting a draw in the app deletes it from your device; there is no copy anywhere else to delete.

Bloodline is for wellness and education. It is not medical advice, and it does not diagnose, treat, or monitor any condition.

4. Information We Do and Do Not Collect

Kairos requires no account and performs its work on-device, so it does not need your name, email address, or health data to run.

The only personal information we ever receive is what you choose to share with us, and even then it is limited:

  • Email address (optional): Kairos offers an optional "stay in touch" field (for example, after a free trial or purchase starts). If — and only if — you enter your email there, we store the address on our own infrastructure, hosted with Amazon Web Services (AWS), in order to send you a welcome note, your trial or receipt confirmation, and occasional product updates. Providing it is entirely optional, is never required to use Kairos, is not health data, and is never sold or used for advertising. You can have it removed at any time by emailing zero@neuralway.ai.
  • App Store & subscriptions: When you purchase or manage a subscription, Apple processes the transaction and provides us with aggregate, anonymized sales and subscription reports. We do not receive your payment card details.
  • Diagnostics (optional): If you opt in to share crash logs and analytics through Apple, Apple may provide us with aggregated, anonymized diagnostic data to help us fix bugs and improve stability. This contains no health data and does not identify you.
  • Support correspondence: If you contact us by email, we receive the information you choose to include in your message.

5. How We Use Information

Any limited information we receive is used only to operate and improve Kairos — for example, to understand aggregate adoption, diagnose crashes, respond to your support requests, and meet our legal and tax obligations. We do not build advertising profiles, and we do not sell, rent, or trade your information.

6. Security

Because your health data stays on your device and in your own private iCloud, it is protected by the security of iOS, watchOS, and Apple's iCloud — including device encryption, the protections Apple provides for HealthKit data, and the encryption Apple applies to iCloud. Neuralway holds no copy of your health data and has no key to it. For the limited correspondence and business records we do hold, we employ industry-standard safeguards including encryption in transit, access controls, and secure infrastructure to protect against unauthorized access, alteration, or destruction.

7. Disclosure of Information

We will not share your information without your consent, except in the following limited circumstances:

  • To comply with legal obligations, court orders, or lawful governmental requests;
  • With service providers acting on our behalf (such as Apple for app distribution and payments, Amazon Web Services for storing the optional email address described above, and — only when you choose to use Bloodline — Amazon Web Services and Anthropic for the transient, never-stored transcription described in Section 3) who are bound by privacy obligations consistent with this policy;
  • To protect the rights, property, or safety of Neuralway, our users, or the public, as permitted by law.

8. Data Retention

Your data is retained on your device — and, if iCloud is enabled, in your own private iCloud — for as long as you keep Kairos installed. You remove it at any time: uninstalling the app or revoking HealthKit access removes Kairos's access to it, and deleting the app's iCloud data in iOS Settings clears the synced copy from your iCloud. Because we never receive your health data, there is nothing on our side to delete. We retain only the limited business records (such as anonymized purchase reports and support emails) for as long as necessary to provide our services, comply with our legal and tax obligations, resolve disputes, and enforce our agreements.

9. Children's Privacy

Kairos is not directed to children under the age of 13 (or the equivalent minimum age in your jurisdiction), and we do not knowingly collect personal information from children. If you believe a child has provided us information, please contact us so we can address it.

10. Your Rights and Choices

You are in control of your data. You can grant or revoke Kairos's access to HealthKit at any time, delete the app to remove its access to your on-device data, and disable diagnostics sharing through your device settings. Depending on your jurisdiction, you may have rights to access, correct, or delete the limited personal information we hold; to exercise these, please contact us using the details below.

11. International Users

Neuralway Technologies Private Limited is based in Bengaluru, India. Because Kairos processes your health data on your own device, that data is not transferred internationally by us. Any limited business records we hold may be processed in India and other jurisdictions where our service providers operate, subject to appropriate safeguards.

12. Changes to this Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated effective date and, where the changes are material, communicated within the Kairos application. Your continued use of Kairos after an update constitutes acceptance of the revised policy.

13. Your Consent

By using Kairos, you consent to the handling of information as described in this Privacy Policy.

14. Contact Us

For any questions or concerns about your privacy or this policy, please contact us at zero@neuralway.ai.

Kairos is a general-wellness app and is not a medical device. It does not diagnose, treat, cure, or prevent any disease or condition.

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