Privacy Policy for Grow Tall

Last Updated: February 28, 2026

This Privacy Policy describes how Grow Tall ("we", "our", or "us") collects, uses, and protects your information when you use our iOS mobile application (the "App").

By using the App, you agree to the collection and use of information in accordance with this Privacy Policy.

Information We Collect A. Personal and Physical Data To provide personalized height estimation and routine generation, the App asks for physical metrics during onboarding, including: Current height and weight Goal height Biological sex and age Ethnicity Parents' height

Where this is stored: This data is stored locally on your device using Apple's standard local storage. We do not upload, store, or process your physical data on our servers.

B. Camera Usage The App requires access to your device's camera to perform a real-time visual scan of your wrist proportions using Apple's Vision framework. No Photos or Videos are Saved: The camera feed is processed in real-time entirely on your device. We do not record, save, or upload any photos, videos, or visual data to our servers or any third-party servers. Skeletal Data: Any skeletal or tracking data generated during the scan is used instantaneously to provide the app's visual feedback and is immediately discarded.

C. Analytics and Usage Data We use a third-party analytics tool (PostHog) to understand how users interact with the App. This helps us fix bugs and improve the user experience. This data may include anonymous usage statistics, button taps, screen views, and crash reports. This data is fully anonymized and cannot be linked back to your personal physical metrics.

Subscriptions and Payments

We use RevenueCat to manage in-app purchases and subscriptions. When you make a purchase, the transaction is processed securely by Apple via your Apple ID. We do not collect, process, or have access to your payment information (like credit card numbers). RevenueCat receives an anonymous identifier to verify your purchase status and unlock premium features.

How We Use Your Information

We use the collected information for the following purposes: To generate personalized daily routines and height estimations locally on your device. To unlock premium content via in-app purchases. To analyze app usage and improve the user experience. Third-Party Services

The App uses the following third-party services, which have their own Privacy Policies: Apple: https://www.apple.com/legal/privacy/ RevenueCat: https://www.revenuecat.com/privacy PostHog: https://posthog.com/privacy

Children's Privacy

The App is not intended for use by children under the age of 9. We do not knowingly collect personally identifiable information from children under 9. If you are a parent or guardian and you are aware that your child has provided us with personal data, please contact us.

Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date at the top.

If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us at: [email protected]