Hydrographic Survey App — Privacy Policy

Last updated: 14 June 2026

This Privacy Policy explains how the Hydrographic Survey App handles information.

The app is designed as a professional tool for surveyors, hydrographers, and students learning surveying techniques.

The app does not collect, store, or transmit any personal data to the developer or to external servers.
The App is not directed at children under the age of 13. We do not knowingly collect any information from children under 13.
The App does not use Apple’s Advertising Identifier (IDFA) and does not track users across apps or websites.

1. Information You Enter

The app allows you to enter survey‑related information such as names, notes, measurements, and other project details.

• This data is stored locally on your device only.

• It is never uploaded, never transmitted, and never shared with the developer.

• You remain in full control of all information entered into the app.

• Survey data is retained on your device until you choose to delete it within the App or uninstall the App. The developer does not hold any copies of your data.

2. User‑Initiated Sharing

The app includes a “Share” feature that allows you to export survey data using other apps (e.g., email, Teams, WhatsApp).

• This action is entirely user‑initiated.

• The app does not automatically send any data anywhere.

• Once exported, the handling of that data is governed by the receiving app or service.

3. Subscription and Billing

The app offers a free trial followed by a subscription to unlock full functionality.

• All billing and payment processing is handled securely by Google Play and Apple App Store.

• The app does not collect or store any payment information.

If RevenueCat is used to manage subscriptions:

• RevenueCat collects purchase history and an anonymous app instance identifier to determine subscription status. RevenueCat’s privacy policy (https://www.revenuecat.com/privacy)

• No personal information is collected.

• No data is shared with advertisers or third parties.

4. No Tracking or Analytics

The app does not use:

• analytics tools

• advertising SDKs

• tracking technologies

• cookies

• device fingerprinting

• advertising identifiers

The app does not track users in any way.

5. No Account or Sign‑In

The app does not require:

• account creation

• email registration

• passwords

• social login

No identity‑based information is collected.

6. Data Security

Because all data remains on your device, you are responsible for:

• securing your device

• managing backups

• controlling access to exported files

The app does not transmit or store your data externally.

7. Contact

If you have questions about this Privacy Policy, you can contact the developer at:

[chillifingers@protonmail.com]