V-Core — Privacy Policy

Last updated: 13 July 2026

V-Core is an offline-first running app. Your data stays on your device. We do not run any servers, we do not have accounts, and we never receive, transmit, or sell your personal or health data.

1. Who we are

V-Core is a running analytics application for Android, developed and published by an independent developer. You can reach us at vcoregr@gmail.com.

2. What we collect

We collect nothing. V-Core has no backend server, no accounts, no login, and no analytics. We do not collect your name, email address, precise location, or device identifiers.

Everything you enter or import — workouts, weight, height, age, goals, shoes, notes, photos — is written to your device's local storage and stays there. It is stored in the app's private storage area, which Android protects from other apps. It is not transmitted anywhere.

Android's automatic cloud backup is disabled for V-Core, so your data is not copied to Google's servers.

3. Health Connect

With your explicit consent, V-Core reads workout data from Android Health Connect so that your runs appear automatically instead of being entered by hand.

What we read

Historical data

V-Core requests permission to read past workout data. Our training analysis needs several weeks of history to produce a meaningful fitness curve. Without it, you would see an empty progress chart for your first two months of use.

Background access

With your consent, V-Core requests permission to sync in the background, so new runs appear without you having to open the app and trigger a sync manually.

How this data is used

Health Connect data is used for one purpose: to calculate and display your own running metrics (VDOT, paces, training zones, progress over time) to you, inside the app.

How this data is stored and shared

Withdrawing access

You can revoke V-Core's access at any time from the Health Connect settings on your device. Data already imported into V-Core remains on your device, and you can delete it from within the app at any time.

4. Importing files

You can import .fit and .tcx workout files from your device. These files are read once, on your device, to fill in the workout details. The file itself is not copied, stored, or uploaded.

5. Strava (optional)

If you choose to connect a Strava account, V-Core uses Strava's official authorisation flow to import your activities. Your Strava login credentials are never seen or stored by V-Core; only an access token is stored on your device, and you can disconnect at any time. Imported activities are stored locally like any other workout. Strava's own privacy policy governs their handling of your data.

6. Permissions we request

7. Backups and export

V-Core lets you export a backup of your data as a JSON file. This file is created on your device and shared only where you choose to send it (for example, to your own cloud storage or email). We never receive it.

8. Purchases

V-Core is a paid app. All payments are handled by Google Play. We do not receive or store your payment details.

9. Deleting your data

Because everything is stored locally, you are in full control. You can delete individual workouts from within the app, or uninstall V-Core to permanently erase all stored data and history from your device.

10. Children

V-Core is not directed at children under 13 and we do not knowingly collect data from them.

11. Not a medical device

V-Core is a fitness and training tool. It is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Do not use it as a substitute for professional medical advice.

12. Changes to this policy

We may update this policy from time to time. The date at the top of this page always reflects the current version.

13. Contact

Questions about this policy: vcoregr@gmail.com