Terms of Use

Build Physics Terms of Use

Last updated: July 18, 2026

These Terms of Use (“Terms”) are an agreement between you and the operator of Build Physics (“Build Physics,” “we,” “us,” or “our”). By accessing or using Build Physics, you agree to these Terms. If you do not agree, do not use the service.

1. What Build Physics provides

Build Physics is an interactive educational physics sandbox and simulation lab. It lets users create, run, inspect, save, import, and export simulated worlds. Some features work locally without an account. Optional account features let users store private worlds for later access.

Simulations simplify real-world conditions and may contain errors or limitations. Build Physics is a learning aid, not a substitute for instruction, controlled laboratory work, engineering analysis, professional advice, or appropriate safety procedures. Verify important results independently and do not rely on a simulation to make safety-critical decisions.

2. Eligibility and student use

You must be at least 13 years old to create an account. If you are not old enough to enter into a binding agreement where you live, a parent, legal guardian, or authorized school representative must approve your use of the service and these Terms.

Children under 13 may use the no-account simulation only with direct supervision from a parent, guardian, or school. They must not create an account, submit feedback, or provide personal information through Build Physics. Schools and educators are responsible for obtaining any permissions or consents required for student use.

3. Accounts

You are responsible for providing an email address you are authorized to use, maintaining the security of your sign-in credentials, and all activity under your account. Do not share credentials or attempt to access another person’s account. Notify us through the in-app Feedback feature if you believe an account has been compromised.

4. Your scenes and content

You retain any rights you have in world names, descriptions, object labels, scene data, and other content you create (“User Content”). You give Build Physics a limited, non-exclusive license to host, copy, process, and display User Content only as needed to operate, secure, and support the features you request. This license ends when the content is deleted from our systems, subject to reasonable technical retention and legal requirements.

You are responsible for your User Content and must have the right to use it. Do not submit unlawful, infringing, harmful, or malicious content, or student records, confidential information, authentication secrets, or other sensitive personal information. Review scene labels and descriptions before sharing or uploading a JSON file.

5. Local files and cloud storage

Local downloads are stored on your device and remain your responsibility. Cloud storage is optional and subject to the limits shown in the app. Features may be changed, interrupted, or discontinued, and data may be lost because of user action, technical failure, or events outside our control. Keep local copies of scenes that are important to you.

6. Acceptable use

You may not use Build Physics to:

• break the law or violate another person’s rights;
• interfere with, overload, damage, or disrupt the service;
• bypass access controls, usage limits, or security protections;
• introduce malware or attempt unauthorized access to accounts or systems;
• misrepresent your identity or impersonate another person; or
• use automated methods that place an unreasonable load on the service.

7. Build Physics materials

Build Physics and its software, interface, simulations, lessons, graphics, documentation, and other materials are owned by us or our licensors and are protected by applicable intellectual-property laws. Subject to these Terms, we grant you a limited, revocable, non-exclusive, non-transferable right to use the service for lawful personal and educational purposes. No other rights are granted.

8. Third-party services

Build Physics relies on service providers for functions such as hosting, account authentication, transactional email, optional analytics, and user-initiated feedback. Your use of a third-party sign-in provider is also governed by your agreement with that provider. Our Privacy notice explains which services are used and how information is handled.

9. Suspension and termination

You may stop using Build Physics at any time. Subject to applicable law, we may modify, suspend, or discontinue any part or all of Build Physics, and may restrict or terminate access, at any time for operational, legal, security, or business reasons. We are not obligated to continue any feature or maintain the service indefinitely. Where reasonably practical, we will provide advance notice and an opportunity to download cloud scenes before a non-urgent service discontinuation or account termination.

10. Disclaimers

To the extent permitted by law, Build Physics is provided “as is” and “as available,” without warranties of any kind, express or implied, including warranties of accuracy, reliability, availability, merchantability, fitness for a particular purpose, and non-infringement. We do not guarantee that the service will always be available, secure, or error-free.

11. Limitation of liability

To the extent permitted by law, Build Physics and its operator, contributors, and service providers will not be liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost data, profits, opportunities, or goodwill arising from or related to the service. Build Physics does not exclude or limit liability that cannot legally be excluded or limited.

12. Changes to these Terms

We may update these Terms to reflect changes to the service, law, or our practices. We will update the date above and provide additional notice when a change is material. Continued use after updated Terms take effect means you accept the updated Terms. If you do not accept them, stop using the service.

13. General terms

These Terms and the Privacy notice are the entire agreement concerning your use of Build Physics unless another written agreement applies. If one provision is unenforceable, the remaining provisions continue in effect. A failure to enforce a provision is not a waiver of it. These Terms do not limit consumer or other rights that cannot lawfully be waived.

14. Contact

Questions about these Terms can be sent through the Feedback feature in Build Physics.