HyeonDo Pipe Layout — Privacy Policy

1. Information the App collects directly

The App has no sign-up and does not directly collect information that identifies you, such as your name, email or phone number.

Dimensions you enter, calculation results, saved jobs, projects, notes, cut lists and settings are stored only on your device and are never sent to our servers. Exported PDF, SVG, DXF and CSV files are shared only with the app you choose.

2. Third-party processing for ads

The App shows Google AdMob banner ads from Google LLC in the shape list and job log. The App requests non-personalized ads only, but AdMob may collect and process the following to serve ads, measure performance and prevent fraud:

• Advertising ID (Android Advertising ID)
• Device information (model, OS version, language) and approximate location based on IP address
• Ad interactions (impressions, clicks), app usage and diagnostics

For details, see Google’s pages below.

• Google Privacy Policy
• How Google uses information from partner apps

3. Usage statistics (Google Analytics for Firebase)

To improve the App we use Google Analytics for Firebase from Google LLC. Your dimensions, job contents and identifying information such as name or email are not sent. The following anonymous usage data may be collected:

• App instance ID, advertising ID, device information (model, OS version, language), country-level location
• App launches and session time, screen usage, whether an in-app purchase was made

This data is used only to improve stability and usability.

4. Ad consent

• In regions that require consent, such as the EEA, the UK and Switzerland, you can choose on the consent screen at first launch and change it anytime in Settings > "Privacy choices".
• Android: reset or delete your advertising ID in device Settings > Google > Ads.
• If you purchase Remove ads, the App shows no ads.

5. In-app purchases

The Remove ads product is processed by Google Play Billing. Payment details (such as card numbers) are handled by Google; we never receive them. Only purchase information provided by Google Play is used on the device to confirm and restore the purchase.

6. Children

The App is not directed to children under 13 and does not knowingly collect personal information from children.

7. Retention and deletion

Saved work on your device can be removed with Settings > "Delete all saved jobs" or by uninstalling the App. Usage data in Google Analytics is deleted according to Google’s retention setting (up to 14 months).

8. Contact

For privacy questions, email us at:

9. Changes to this policy

If this policy changes, we will post the changes and the effective date on this page.