Privacy Policy

One-sentence summary: your health data never leaves your device. We do not collect it, we do not store it, we do not sell it — we cannot, because we never receive it.

1. Who we are

VO2 Max Tracker (the “App”) is developed and published by MontesWeb SL, a company registered in Spain (Tax ID / CIF: B09544107, registered address: Benjamín Palencia 6, 3D, Spain). The App is available for iPhone (App Store) and Android (Google Play). For any privacy matter you can reach us at soporte@montesweb.com.

2. Health data the App reads

The App only reads health data after you grant explicit permission through your device’s own authorization screen. It never writes any data to Apple Health or Health Connect.

On iPhone (Apple Health / HealthKit):

• VO₂ Max (cardio fitness)
• Workouts (type, duration, distance, calories and GPS route)
• Heart rate and resting heart rate
• Sleep
• Body weight and height
• Date of birth and biological sex (used to calculate fitness percentiles and cardiovascular age)

On Android (Health Connect):

• VO₂ Max
• Exercise sessions
• Heart rate and resting heart rate
• Sleep
• Body weight and height
• Distance and total calories burned

With your permission, the App also reads up to 12 months of past Health Connect data, so your trends are complete from the first day instead of starting with only the last 30 days.

Health Connect does not provide age or sex, so on Android the App asks you to enter your birth year and sex during setup. These answers are stored only on your device.

You choose which categories to share. The App works with whatever you grant and never requires more than it needs.

3. How and where your data is processed

Exclusively on your device. All calculations — fitness age, percentiles, trends, workout impact and your training plan — run locally. The App has no servers of its own, does not require an account or registration, and never transmits your health data over the network.

4. Third-party services

The App uses a small number of service providers that never receive any health data:

• Apple App Store and Google Play process subscription payments. We never see your payment details.
• RevenueCat manages subscription status. It receives an anonymous app user ID, your purchase history and basic device information, so it can tell the App whether Premium is active.
• Sentry receives crash reports and technical diagnostics (error details, app version, device model and operating system) so we can fix bugs. Crash reports do not include health data and are not linked to your identity.

None of these providers uses your data for advertising, and none of them is used to track you across other apps or websites.

5. What we never do

• We do not collect, transmit or upload your health data off your device
• We do not use advertising SDKs or show ads
• We do not sell, rent or share your data with anyone
• We do not track you across other apps or websites
• We do not write anything to Apple Health or Health Connect

6. Apple HealthKit and Google Health Connect commitments

We never use data obtained through HealthKit for advertising, marketing or data mining, and we never disclose it to third parties, as required by Apple’s guidelines.

The use of information received from Health Connect adheres to the Health Connect Permissions policy, including the Limited Use requirements. Health Connect data is used only to provide the App’s features described above, is never transferred off your device, and is never used for advertising or sold.

You can revoke the App’s access at any time:

• iPhone: Health app → Sharing → Apps and Services → VO2 Max Tracker, or Settings → Privacy & Security → Health
• Android: Settings → Health Connect → App permissions → VO2 Max Tracker

7. Data retention and how to request deletion

VO2 Max Tracker (developer: MontesWeb SL) does not have user accounts.

• Data on your device: the App stores only its settings, your profile answers and your training-plan answers locally. Uninstalling the App permanently deletes all of them.
• Health data: it stays in Apple Health or Health Connect, under your control. We never receive it.
• Subscription records and crash reports: to request deletion of the anonymous purchase records (RevenueCat) or crash reports (Sentry) linked to your device, email soporte@montesweb.com with the subject “Data deletion – VO2 Max Tracker”. We process requests within 30 days. Transaction records that Apple, Google or tax law require us to keep are retained only for as long as legally required.

8. Your rights

Under the EU General Data Protection Regulation (GDPR) and equivalent laws (including the California Consumer Privacy Act), you have rights of access, rectification, erasure, objection, restriction and portability over personal data a company processes about you. You can exercise these rights or ask us anything at soporte@montesweb.com. If you contact us by email, we will use the data you provide only to answer you. You may also lodge a complaint with your supervisory authority (in Spain, the AEPD, www.aepd.es).

9. Children

The App is not directed at children under 13 (or the equivalent minimum age in your jurisdiction) and does not knowingly collect personal data from children.

10. Changes to this policy

If this policy changes, we will update the date at the top of this page. Material changes will also be communicated inside the App. Continued use of the App after a change means you accept the updated policy.

11. Contact

MontesWeb SL — soporte@montesweb.com