Privacy Policy

App: Body Age
Package: com.jcstudio.bodyage
Developer: JC Studio
Effective: 20 July 2026 (previous version 14 July 2026 — usage-count section added)

In short: There is no account and no sign-in, and your health data is never sent anywhere. Every measurement stays on your phone and is deleted with the app. The app does send a random install number and a launch date to the developer so we can count how many people use it — this cannot identify you (see sections 3 and 4).

1. What we do not collect

Body Age has no sign-up and no login. It does not ask for or collect your name, email, phone number, address or location.

2. Health data — stored on your device only

You enter the following so the app can calculate a body age. It is stored only inside the app on your phone and is never transmitted. The developer cannot see it.

Year of birth, sex, height, weight, waist
Systolic blood pressure, blood-pressure medication, smoking status, diabetes diagnosis
Resting heart rate, exercise habits (frequency, intensity, duration)
Sit-up count, one-leg stand times
The body ages calculated from the above, and your measurement history
App settings (country, language)

You can erase all of it at any time with Settings → Delete all data, and uninstalling the app removes it too.

3. Network access

All calculation happens on your device and no server ever receives your health data. The app connects to the internet for three purposes:

Show ads — via Google AdMob.
Handle purchases — via Google Play and RevenueCat, for the ad-free (Pro) purchase and its restore.
Count usage — once per launch, the app sends the following to the developer's Supabase server:
- A random install number generated when you install the app. It is not your device ID and not your advertising ID; reinstalling produces a brand-new number that cannot be linked to the old one.
- The launch date, your operating system, and the app version.
No health data, measurements or profile details are included. This exists only to answer "how many people used the app today". It is not used to track individuals or to target ads.

Standard network information such as an IP address may be processed as part of ordinary internet communication. The developer does not collect or store it to identify you.

4. Third-party services

The app uses the services below. Each handles data under its own policy. None of them receive your health data.

Service	Purpose	Data handled	Policy
Google AdMob	Showing ads	Advertising ID, device information, approximate location (from IP), ad interactions	Google Privacy Policy
Google Play Billing	Processing the Pro purchase	Purchase history. Payment details are handled by Google and are never shared with the developer.	Google Privacy Policy
RevenueCat	Verifying and restoring the purchase	Anonymous user ID, purchase history	RevenueCat Privacy Policy
Supabase	Hosting the developer's usage-count database	Random install number, launch date, operating system, app version	Supabase Privacy Policy

Usage counts are stored in a database the developer controls. They are not sold and not shared with third parties, including advertisers.

The app requests non-personalized ads. You can reset your advertising ID or opt out of personalised ads at any time in Android Settings → Google → Ads.

5. Permissions

Internet — loading ads, verifying purchases
Vibrate — haptic feedback during measurements

The app does not request location, contacts, camera or microphone permissions; those are explicitly blocked.

6. Medical notice

Body Age is a wellness reference tool, not a medical device. It is not intended to diagnose, treat, cure, mitigate or prevent any disease. The body ages, grades and improvement simulations it produces are estimates derived from published research formulas and are not a medical diagnosis. Consult a qualified healthcare professional about your health.

7. Children

The app is intended for adults aged 18 and over and does not knowingly collect data from children.

8. Your rights

Your health data and measurement history are never held on a developer server, so you control all of it from the device.

Erase — Settings → Delete all data, or uninstall the app
Access — every measurement is visible on the History screen

The install number used for usage counts is not tied to your name, email or device identifiers, so the developer cannot locate an individual person's record. Uninstalling the app stops all further reporting and removes the number stored on your device; reinstalling creates a new one that cannot be linked to the previous record. For questions about these records, contact us below.

9. Changes

This policy may be updated to reflect legal or product changes. Updates are published on this page.

10. Contact

whdcjf8172@gmail.com