Last updated: 08 September 2026
Builders Calculator ("the app") is an offline construction calculator. This policy explains what data is and is not handled when you use it.
None. All calculations happen entirely on your device. Your calculation history, settings and saved material prices are stored locally on your device only and are never transmitted anywhere. The app contains no accounts and no analytics SDK.
The app makes the following requests, none of which include personal data:
If you choose to rate the app, you are taken to its Google Play listing. The app does not track whether you left a rating; it only remembers locally, on your device, that you tapped the button so it stops asking.
The app displays ads served by Google AdMob. AdMob may collect and process device information (such as advertising ID, IP address, and coarse device data) to serve and measure ads, as described in Google's Privacy Policy and AdMob's data practices. You can reset or delete your advertising ID and opt out of ad personalisation in your device's Google settings.
If you are in the European Economic Area, the United Kingdom or Switzerland, the app asks for your consent before any ads are loaded, using Google's certified consent platform. Declining is always available, and if consent cannot be established the app runs without ads rather than showing them anyway. You can change your choice at any time from Help & About → Ad privacy options.
The app is not directed at children and does not knowingly collect data from anyone, including children.
If this policy changes, the updated version will be posted at this URL with a new "last updated" date.
Questions? Email: [email protected]