Your data, clearly stated.

1. Data We Collect

We do not collect personal data on our own servers for normal app usage.

• On-device data: construction calculation history, saved projects, and premium state are stored locally on your device.
• Purchase data: In-App Purchase transactions are processed by Apple through StoreKit.

2. How Data Is Used

• On-device calculation history is used to show your recent construction calculations.
• Saved project data is used to let you revisit and update your construction estimates.
• Premium entitlement is used to unlock paid features after a successful purchase or restore.

3. Third-Party Services

Purchases are handled by Apple. Apple may process data under its own policies: Apple Privacy Policy.

4. Data Sharing

We do not sell personal data and do not share on-device calculation data or project information with third parties.

5. Data Retention and Deletion

• Calculation history and saved projects remain on your device until you clear them in the app.
• You can remove all app data by deleting the app from your device.

6. Consent and Control

By using the App, you consent to local processing required for app functionality. You can stop processing at any time by discontinuing use and deleting the app data.

7. Children

The App is a professional construction calculator utility and is not designed to knowingly collect personal data from children.

8. Contact

If you have privacy questions or data requests, contact: manhnt.bkit@gmail.com

9. Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be reflected by updating the effective date on this page.