These Terms of Use (“Terms”) govern access to and use of QuickMDSim, including quickmdsim.com, app.quickmdsim.com, and related APIs (together, the “Service”). By creating an account, checking the acceptance box at signup, or using the Service, you agree to these Terms.
If you do not agree, do not create an account or use the Service. Questions: [email protected].
1. Who we are
QuickMDSim is operated by the person or entity that runs the Service at quickmdsim.com (“we,” “us”). Contact: [email protected].
You must be at least 18 years old and able to form a binding contract. If you use the Service for an organization, you represent that you have authority to bind that organization.
2. The Service
QuickMDSim is a browser workbench for running LAMMPS molecular dynamics jobs in the cloud. You create a project, edit input files, submit jobs that consume compute credits, and download outputs.
The Service is an early product. Features, limits, and runner capacity can change. We do not promise a particular SLA, queue time, or scientific result.
3. Accounts
- Provide a real email address you control and keep it current.
- You must verify that email before jobs can run and before free seed credits unlock.
- Keep your password confidential. You are responsible for activity on your account.
- One person per account unless we agree otherwise in writing.
- Tell us promptly if you think your account was compromised.
4. Acceptable use
You may use the Service only for lawful research, teaching, and development. You agree not to:
- Break the law, or upload content you do not have the right to use.
- Probe, scan, or attack the Service, other users, or our infrastructure.
- Attempt to escape job isolation, access another user’s files, or mine cryptocurrency.
- Bypass credit checks, email verification, rate limits, or billing.
- Resell raw compute, share login credentials, or run a competing hosting service on top of QuickMDSim.
- Upload malware or content that is illegal to possess or distribute.
- Overload the Service in a way that degrades it for others (for example, tight retry storms or junk jobs meant to exhaust capacity).
You are responsible for export-control and sanctions compliance for your work and files. Do not use the Service if applicable law forbids it.
5. Your files and jobs
You keep ownership of the input scripts, data files, potentials, and outputs you upload or generate (“Your Content”). We need a limited license to host, copy, process, and transmit Your Content solely to operate the Service — for example, staging files into a job container, storing outputs, and showing them back to you.
We do not claim your science. We may look at files or logs as needed to debug the platform, prevent abuse, or comply with law. Do not upload secrets you cannot afford to store with a cloud provider.
You can download Your Content while your account is active. We may delete files, jobs, or accounts after closure, prolonged inactivity, or a terms violation. Keep your own backups of anything important.
6. No scientific warranty
LAMMPS is third-party software. Job success (status “Done”) means the runner finished — not that the physics you intended actually happened. You are responsible for your inputs, potentials, units, and for checking trajectories and logs before you rely on a result.
The Service is not a substitute for your own validation, peer review, or professional judgment. We do not warrant fitness for any particular research, publication, regulatory, or production purpose.
7. Credits, billing, and refunds
- Compute is sold as CPU-hour / vCPU-second credits. Multi-core jobs are billed as wall time × reported vCPUs.
- A free seed (currently 0.5 CPU-hour) unlocks after email verification. Seed amounts can change.
- Paid plans and overage rates are shown in the app at checkout. Stripe processes payment.
- We do not charge credits for a job that fails because of a confirmed platform outage. User input errors and LAMMPS errors consume the compute they actually used.
- Consumed compute is not refundable. If a charge looks wrong, email us and we will look.
- We may hard-stop jobs when credits run out. We will not silently run up a surprise five-figure bill.
- Prices and included hours may change. Changes apply going forward; we will not rewrite already-consumed credits.
8. Third-party software and services
Jobs run LAMMPS and related open-source tools under their own licenses. Those licenses are between you and the licensors — not a grant from us. The Service also uses infrastructure and vendors such as Cloudflare, Stripe, and Resend. Their terms apply to the parts they provide.
9. Our intellectual property
The Service, brand, site, and software we publish (other than Your Content and third-party tools) belong to us and our licensors. These Terms do not give you a right to copy the product, scrape it for a competing service, or use the QuickMDSim name in a way that implies endorsement.
10. Privacy
How we handle personal data is described in our Privacy Policy. Creating an account means you also acknowledge that policy.
11. Availability and changes
We may modify, suspend, or discontinue any part of the Service, including free capacity. We may update these Terms. The current version lives at quickmdsim.com/terms. If a change is material, we will note the new effective date on that page. Continued use after the effective date is acceptance of the updated Terms.
12. Suspension and termination
You may stop using the Service at any time. Email us if you want the account deleted. We may suspend or close an account for a Terms violation, unpaid charges, abuse, legal risk, or to protect the Service. We may refuse service where we reasonably believe continued access would harm us or others.
13. Disclaimers
THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE.” TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. We do not warrant that jobs will complete, that outputs will be correct, or that the Service will be uninterrupted or error-free.
14. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE ARE NOT LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, LOST DATA, OR LOST RESEARCH TIME, EVEN IF WE WERE ADVISED THEY were possible.
Our total liability for any claim arising out of the Service or these Terms is limited to the greater of (a) the amounts you paid us for the Service in the 12 months before the claim, or (b) US $100.
Some jurisdictions do not allow certain limitations. In those places, the limits apply to the fullest extent allowed.
15. Indemnity
You will defend and indemnify us against claims, damages, and costs (including reasonable legal fees) arising from Your Content, your jobs, your use of the Service, or your breach of these Terms.
16. Governing law
These Terms are governed by the laws of the State of California, excluding conflict-of-law rules. Courts in San Diego County, California have exclusive jurisdiction, except that we may seek injunctive relief anywhere if needed to protect the Service.
17. Miscellaneous
These Terms are the whole agreement between you and us about the Service. If a court finds a section unenforceable, the rest still applies. You may not assign these Terms without our consent; we may assign them in connection with a sale or reorganization of the Service. Failure to enforce a provision is not a waiver.
Version: 2026-08-12.