Datum App
Discover Datum – A professional collection of construction calculators for builders, tradespeople and homeowners. It delivers precise concrete volume, gap spacing, and essential construction calculations to streamline your projects and boost accuracy.
Discover Datum’s Essential Tools
Dive into the powerful calculators and features that simplify construction tasks and boost accuracy for every builder.
Concrete Volume Calculator
Accurately calculate concrete needs for any project to minimize waste and cost.
Gap Spacing Tool
Precisely determine spacing measurements to ensure structural integrity.
BTU Calculator
Estimate quantities of various construction materials quickly and reliably.
Many more
41 calculators designed to help with every task on site.
Support – Need help?
If you’ve found a bug, have a feature suggestion or need assistance using Datum, we’d love to hear from you.
Email: DatumSupport@groundupapps.com
Privacy Policy
Effective Date: 10/06/26
Datum – The Builders Calculator
This Privacy Policy explains how Datum – The Builders Calculator (“Datum”, “we”, “our”, or “us”) handles information when you use our mobile application.
Information We Collect
Datum is designed to work without requiring users to create an account or provide personal information.
We do not collect:
- Names
- Email addresses
- Phone numbers
- Postal addresses
- Payment information
- User accounts
- Location data
Calculator Data
All calculations entered into the app remain on your device.
We do not upload, store or transmit your calculator inputs to our servers.
Analytics
At present, Datum does not collect analytics or usage data that identifies individual users.
If anonymous analytics are introduced in future updates, this Privacy Policy will be updated accordingly.
Advertising
Datum does not display third-party advertising.
Third-Party Services
Datum may use Apple services that are required for distributing and maintaining the application through the Apple App Store.
These services are governed by Apple’s own Privacy Policy.
Data Security
As no personal information is collected or stored by Datum, there is no personal user database maintained by us.
Children’s Privacy
Datum is intended as a utility application for construction professionals, tradespeople and homeowners.
We do not knowingly collect information from children.
Changes to This Policy
We may update this Privacy Policy from time to time.
Any changes will be published on this page with an updated effective date.
Contact
If you have any questions about this Privacy Policy or the Datum application, please contact:
Ground Up Apps
Email: DatumSupport@Groundupapps.com
Your Rights
If future versions of Datum collect any personal information, users will have the rights provided under applicable UK data protection legislation, including the UK General Data Protection Regulation (UK GDPR).
Any such changes will be reflected in an updated Privacy Policy before they take effect.
Terms & Conditions
Effective Date: 10/06/26
These Terms & Conditions (“Terms”) govern the use of the Datum – The Builders Calculator mobile application (“Datum”, “the App”) developed by Ground Up Apps (“we”, “our”, or “us”).
By downloading or using the App, you agree to these Terms.
1. Use of the App
Datum is provided as a free construction and engineering calculation tool for builders, tradespeople, contractors, DIY users and homeowners.
The App is intended to assist with estimating quantities and sizing calculations. It is not intended to replace professional judgement, engineering design, manufacturer guidance or statutory requirements.
2. Accuracy of Calculations
Every effort has been made to ensure the calculations within Datum are accurate and based on recognised engineering principles and accepted construction methods.
However, all calculations are estimates based solely on the information entered by the user.
Users are responsible for:
- Verifying all measurements.
- Checking project-specific requirements.
- Confirming calculations before ordering materials.
- Following current Building Regulations and manufacturer guidance where applicable.
Ground Up Apps accepts no responsibility for errors resulting from incorrect user input.
3. Professional Responsibility
Datum should not be relied upon as the sole basis for:
- Structural engineering design.
- Building Regulation compliance.
- Heating system design.
- Air conditioning system design.
- Electrical design.
- Any other work requiring professional certification or approval.
Where professional calculations or certification are required, appropriately qualified professionals should always be consulted.
4. Limitation of Liability
To the fullest extent permitted by law, Ground Up Apps shall not be liable for any direct, indirect, incidental or consequential loss, damage or expense arising from:
- Use of the App.
- Reliance on calculations generated by the App.
- Errors in user-entered information.
- Inability to use the App.
- Decisions made using information provided by the App.
Users remain solely responsible for verifying all calculations before commencing work or purchasing materials.
5. Updates
We may update, improve, modify or remove features of the App at any time without prior notice.
While we aim to maintain compatibility with current devices and operating systems, uninterrupted availability cannot be guaranteed.
6. Intellectual Property
Datum, including its calculations, design, graphics, branding, logos, text and software, is the intellectual property of Ground Up Apps unless otherwise stated.
The App may not be copied, reproduced, modified, reverse engineered or redistributed without prior written permission.
7. Third-Party Information
Where the App references standards, regulations, manufacturer information or typical construction values, these are provided for guidance only.
Users should always refer to the latest official documentation issued by the relevant authority or manufacturer.
8. Privacy
Your use of the App is also governed by our Privacy Policy, available above.
9. Changes to These Terms
We reserve the right to amend these Terms at any time.
The latest version will always be available on our website.
Continued use of the App following any updates constitutes acceptance of the revised Terms.
10. Governing Law
These Terms shall be governed by and interpreted in accordance with the laws of England and Wales.
Any disputes arising from the use of the App shall be subject to the exclusive jurisdiction of the courts of England and Wales.
11. Contact
If you have any questions regarding these Terms, please contact:
Ground Up Apps
Email: datumsupport@groundupapps.com