Privacy Policy

Last updated October 13, 2026

Effective date: October 13, 2026

This Privacy Policy explains how the Qronos Android app ("Qronos", "the app", "we", "us") handles your information. In short: Qronos reads health and fitness data from Google Health Connect with your permission and processes it entirely on your device. We do not collect, upload, sell or share your health data.

Who we are

Qronos is developed by [Your name or company name], [Country]. You can contact us at [your@email.com].

Data the app accesses

With your explicit permission, Qronos reads the following types of data from Google Health Connect: [update this list to match the permissions your app requests]

Heart rate and resting heart rate
Heart rate variability
Sleep sessions and sleep stages
Steps, distance and active energy
Exercise sessions

If you log an activity manually in the app (for example a workout, its duration and perceived effort), Qronos may write that activity to Health Connect so other apps you allow can see it.

You choose which permissions to grant and can change them at any time in your phone's Health Connect settings.

How the data is used

Qronos uses this data only to calculate and show you your Charge, Load and Sleep scores, trends and related guidance inside the app. The app adapts its calculations to you over time.

Where the data is processed and stored

All processing happens on your device. Health data and scores are stored locally on your phone. Nothing is sent to or processed on our servers, and we do not run analytics or advertising SDKs that receive your health data.

Sharing

We do not sell, rent or share your data with anyone. We do not use your health data for advertising, and we do not transfer it to third parties.

Google Health Connect

The use of information received from Health Connect will adhere to the Health Connect Permissions policy, including the Limited Use requirements.

Retention and deletion

Data kept by Qronos stays on your device until you delete it. You can remove it by clearing the app's storage or uninstalling the app. Revoking Health Connect permissions stops Qronos from reading any further data.

Not medical advice

Qronos is a wellness app and not a medical device. Scores and guidance are for general information only and are not a substitute for professional medical advice.

Children

Qronos is not directed at children under [13/16] and we do not knowingly process data from them.

This website

This website is hosted by [hosting provider]. Like most websites, the server may keep standard access logs (such as IP address and browser type) for security and performance. [Describe any cookies, analytics or contact forms you add to this site.]

Changes to this policy

We may update this policy from time to time. Changes will be posted on this page with a new effective date.

Contact

Questions about this policy? Email [your@email.com].