Privacy Policy
Applies to pdfdart.com and the Concrete Calculator & Cost Android app.
Effective date: September 14, 2026
1. Who we are
PDFDart / SS Utility Lab publishes Concrete Calculator & Cost. Privacy questions can be sent through our Contact & Support page.
2. Information processed by the app
Concrete Calculator & Cost does not require you to create an account. Measurements, quantities, waste percentages, prices and calculator results are processed locally on your device for the purpose of providing calculations.
3. Google Mobile Ads
The app uses Google Mobile Ads to display banner advertising. Google may process information such as IP address, approximate location derived from IP, device or advertising identifiers, app interactions, diagnostics, performance information and other data needed to provide ads, analytics, fraud prevention and security. Google’s own privacy terms and controls apply to that processing.
4. Consent and privacy choices
Where required, the app uses Google’s User Messaging Platform to present consent or privacy-choice messages related to advertising. Available choices can depend on your region and Google’s requirements.
5. Google Play Billing
The app may offer an optional purchase to remove advertising. Purchases are processed by Google Play Billing. PDFDart / SS Utility Lab does not directly receive your full payment-card details. The app receives purchase status information needed to determine whether the ad-removal entitlement should be active.
6. Backups and device transfer
The app is configured to disable Android cloud backup and device-transfer backup of its app data. This is intended to reduce unintended copying of local app information through Android backup mechanisms.
7. Website support information
This website is an informational and support site and does not require a public user account. If you submit the support form, we receive the name, reply email address, topic and message you choose to provide so we can respond to your request.
8. Data sharing
We do not operate a custom backend that sells calculator information. Information may be processed by Google services used in the app, including Google Mobile Ads, Google User Messaging Platform and Google Play Billing, according to those services’ policies.
9. Children
Concrete Calculator & Cost is a general construction/project-estimating utility and is not designed specifically for children.
10. Security, retention and deletion
Calculator data is intended to remain on-device. You can remove local app data by clearing the app’s storage or uninstalling the app. Support correspondence may be retained as reasonably needed for support, fraud prevention, recordkeeping or legal obligations. You may contact us through the support form regarding deletion of support correspondence, subject to any records we are legally required to retain.
11. Third-party privacy information
Google’s privacy policy is available at policies.google.com/privacy.
12. Changes to this policy
We may update this policy when the app, website or third-party services change. The effective date at the top will be updated when material changes are made.
13. Contact
Use our Contact & Support page for privacy questions or requests.