Rollmetry Terms of Use

Effective Date: November 5, 2026
Last Updated: November 5, 2026
Developer / Operator: HEBEI SNDAS SURVEY AND DRAW CO.,LTD.

Scope and Acceptance

These Terms of Use (“Terms”) apply to Rollmetry (“the App”), provided by HEBEI SNDAS SURVEY AND DRAW CO.,LTD. (“we”, “us”, or “our”).

Rollmetry is a companion application for compatible Bluetooth measuring wheels, providing device connection, measurement, calculation, record management, and file export functions.

By downloading, installing, or using the App, you agree to comply with these Terms. If you do not agree, please discontinue use of the App.

Your use of the App is also subject to our Privacy Policy, which explains how information is processed.

Intended Use and User Responsibilities

Rollmetry is designed for use with compatible Bluetooth measuring wheels. Some features require a supported measuring wheel, an appropriate mobile device, and Bluetooth connectivity.

When using the App, you should:

• Follow the operating instructions for your measuring wheel and mobile device.
• Ensure the measuring wheel is properly configured and calibrated before measurement.
• Verify device connection and measurement settings before recording results.
• Use the App in accordance with applicable laws and safety requirements.
• Maintain appropriate backups of important measurement records and exported files.

You must not intentionally interfere with the App’s operation, attempt unauthorized access to related systems, or use the App for unlawful purposes.

Measurement Results and Data

Measurement results, including distance, tracks, area, and related calculations, are generated using information received from the measuring wheel, device sensors, application settings, and user input.

Measurement accuracy may be affected by device calibration, wheel circumference settings, operating conditions, surface conditions, sensor characteristics, and user operation.

Users should verify measurement results before relying on them for important decisions or professional applications. Where certified measurements or legally recognized surveying results are required, use appropriately qualified equipment and procedures.

The App is a measurement assistance tool and does not independently guarantee the accuracy of connected hardware or user-generated measurement results.

Measurement records are primarily stored locally on the user’s device. Users can manage supported records and initiate file exports using the App’s available functions.

Rollmetry may support exports in PNG, PDF, XLSX, and DXF formats. Users are responsible for checking exported results and managing files saved outside the App.

Nothing in these Terms excludes or limits rights or remedies that cannot legally be excluded or limited under applicable consumer protection laws.

Intellectual Property

The Rollmetry software, interface, documentation, trademarks, and related materials are protected by applicable intellectual property laws. Relevant rights belong to their respective lawful owners or licensors.

Subject to applicable law and these Terms, users may install and use the App for its intended functions.

Unless permitted by applicable law or authorized by the relevant rights holder, users may not redistribute, commercially exploit, or reproduce protected parts of the App beyond the scope of permitted use.

Measurement records and files generated by users remain subject to the rights of their respective owners. These Terms do not transfer ownership of user-generated measurement content to us.

Availability and Updates

We may release updates to improve compatibility, reliability, security, or functionality. Certain features may change as the App and supported hardware evolve.

Availability and performance may depend on the operating system, mobile device, Bluetooth environment, and measuring-wheel firmware.

We may update these Terms when App features, operational practices, or applicable requirements change. The revised Terms will be published on this page with an updated effective or revision date.

Where required by applicable law, we will provide additional notice or obtain any necessary consent before relevant changes take effect.

Contact Us

Developer / Operator:
HEBEI SNDAS SURVEY AND DRAW CO.,LTD.
河北圣达斯测绘工具有限公司

Support Email:
service@sndas.com

If you have questions about these Terms or experience issues with Rollmetry, please contact our support team by email.