Terms of Use & Privacy Notice

01The service and the beta

Mobius-Lab is an online tool that helps engineers size and check stormwater drains (MSMA 2), gravity sewers (MSIG) and reinforced-concrete columns (EN 1992-1-1) and produce schedules, drawings and reports.

• Mobius-Lab is currently a free beta. Features may change, be limited or be withdrawn, and the service may be unavailable at times.
• We intend to introduce paid plans. We will tell you before any charges apply. You will not be charged unless you sign up to a paid plan, and free beta access does not entitle you to free use after paid plans start.

02Your account

• You sign in with a Google account. The account is for one person only; do not share it or let others use the service through it.
• You are responsible for activity under your account. Tell us promptly if you believe it has been misused.

03Licence to use Mobius-Lab

We grant you a limited, personal, non-exclusive, non-transferable and revocable licence to use Mobius-Lab through its website for your own engineering design work, in line with these terms. All rights not expressly granted are reserved.

04Ownership

Mobius-Lab, including its software, design engines and methods of implementation, user interface, report formats and templates, documentation, name and logo, is owned by Yap Han Yin and protected by copyright and other laws. Using the service does not give you any ownership of it. If you send us feedback or suggestions, we may use them freely without obligation to you.

05What you must not do

• Copy, reproduce, modify, translate or create derivative works of Mobius-Lab or any part of it.
• Reverse engineer, decompile, disassemble or otherwise try to derive the design engines, source code, algorithms or calculation logic, including by systematically probing the service with inputs and analysing the outputs.
• Use bots, scripts, scrapers, AI agents or other automated means to access the service or extract data, logic or outputs in bulk.
• Bypass, disable or interfere with sign-in, security or usage limits, or try to access parts of the service or its servers that are not made available to you.
• Resell, sublicense, rent, host or provide Mobius-Lab or its functionality to others, or use it to build or improve a competing product or service.
• Remove copyright or ownership notices, or use the service unlawfully or to infringe anyone's rights.

06Your drawings and the outputs

• You keep ownership of the drawings, data and inputs you provide. You allow us to process them only to provide the service to you.
• You may use the schedules, drawings and reports the service produces for you ("outputs") for your own projects, including issuing them to your clients and to authorities. The report formats, templates and layout remain ours; you may not offer them as a product or use them to recreate the service.
• You confirm you have the right to upload the drawings you use.

07Engineering responsibility

Mobius-Lab is a calculation aid for competent engineers. Results depend entirely on the drawings and inputs you provide and on the stated design codes. You must check all inputs, results, drawings and reports before you rely on them or issue them. Mobius-Lab does not replace professional judgement, and the engineer submitting a design remains fully responsible for it.

08No warranty and limits of liability

• The service, especially during the beta, is provided "as is" and "as available", without warranties of any kind, including accuracy, fitness for a particular purpose or uninterrupted availability, to the fullest extent permitted by law.
• To the fullest extent permitted by law, we are not liable for any indirect, incidental or consequential loss, or for loss of profit, business, contracts or data, or for design errors, delays or costs arising from use of the service or its outputs.
• Our total liability for all claims relating to the service is limited to the amount you paid us for it in the 12 months before the claim (nil during the free beta). Nothing in these terms limits liability that cannot be limited by law.

09Suspension and termination

We may suspend or end your access at any time if you breach these terms, misuse the service, or if we stop offering it. You may stop using the service at any time. Sections 04, 05, 07, 08 and 11 continue to apply after your access ends.

10Changes to these terms

We may update these terms, for example when paid plans start. The version date above will change, and you will be asked to accept the new version before you can continue running designs.

11Governing law

These terms are governed by the laws of Malaysia, and the courts of Malaysia have jurisdiction over any dispute about them.

12Privacy notice (Personal Data Protection Act 2010)

• What we collect: from your Google sign-in, your name, email address and profile picture, and the dates and number of your sign-ins; and a record of each design you run (which tool, when, and how long it took) and when you accepted these terms.
• Your drawings: drawings and inputs are sent to our server only to calculate the result and are not stored there. Your saved designs and project folders are kept in your own browser on your own computer.
• Why: to provide and secure the service, to prevent misuse and enforce these terms, to understand how the service is used, and to contact you about the service, including the introduction of paid plans.
• Who processes it for us: Supabase (sign-in and database), Vercel (website hosting and computation) and Google (sign-in). Their servers may be outside Malaysia. We do not sell your personal data.
• Your choices: giving this data is needed to use the design tools. You may ask to access or correct your personal data, or ask us to delete your account, by contacting Yap Han Yin, owner of Mobius-Lab.