Terms of Service

Last updated: 2026-10-11

These terms are an agreement between you and TEX VIETNAM TECHNOLOGY JOINT STOCK COMPANY (CÔNG TY CỔ PHẦN CÔNG NGHỆ TEX VIỆT NAM; registered name without diacritics: CONG TY CO PHAN CONG NGHE TEX VIET NAM; "TEX Vietnam JSC"), trading as TEXVN ("Simulic", "we", "us"), the operator of simulic.com and its related domains (the "Service"). By creating an account or using the Service you agree to them. If you do not agree, do not use the Service.

1. Who may use Simulic

• Accounts are for adults (18 years or older): teachers, tutors, parents and other educators or creators. You confirm your age when you complete your account.
• Students do not need an account and must not create one. Teachers share simulations with students through links, QR codes, embed codes or their school's learning platform. Students open those links without signing in.
• If you use the Service on behalf of a school or organisation, you confirm that you are allowed to accept these terms for it.

2. Your account

• You sign in with a link sent to your email address or with your Google account. There is no password. Keep your email account secure and sign out on shared devices; you are responsible for what happens under your account.
• Give us accurate information (name, country, subject). You can change it at any time in Account.
• We may suspend or close an account that breaks these terms, harms the Service or other users, or has been inactive for a long period. You can close your account yourself at any time (section 8).

3. The Simulic library

The simulations published on simulic.com (the "Library") are created and owned by TEXVN and protected by copyright. We grant you a free, non-exclusive, worldwide licence, including for commercial purposes, to:

• use Library simulations in any setting: lessons, tutoring, paid classes and courses, training, presentations and commercial websites;
• share them with anyone using the links, QR codes and embed codes that the Service generates;
• embed them on any website, learning platform or app using the embed code;
• show them in screenshots, screen recordings and videos, including commercial ones, with the credit "Simulic (simulic.com)".

The simulations must always be delivered by the Service. You may not:

• modify Library simulations, except through the Service's own Customize (remix) feature (section 5);
• download, copy, extract, store, mirror or re-host simulation files or code on another website, platform or product, or remove the technical measures that protect them;
• sell or license the simulations themselves, alone or as a collection (for example a simulation pack or a competing library). Using them inside your own paid teaching, course or product through links and embeds is allowed;
• use automated tools to crawl or scrape the Library, or request simulation files at a rate that is clearly not normal use;
• remove or hide the Simulic attribution, except where the Service itself offers that option (for example the Pro settings for shared links);
• present Library simulations as your own work.

Simulations are built for teaching. They simplify real phenomena and may contain errors. Check them against your curriculum before you rely on them, and use Report a problem when you find a mistake.

4. Share links and embeds

• Share links and embed codes are yours to manage: you can rename, disable and delete them. A disabled link stops working for everyone who has it.
• You may use links and embeds in any context, including commercial ones, under the licence in section 3. Do not use them to rebuild or mirror the Library as a competing collection.
• Simulic counts how many times each link is opened. By default it does not identify, track or store anything about the people who open a link.
• You may add up to five questions to a link so students can type a nickname and free-text answers ("class results"), which only you can see. Ask for a first name or nickname only: do not use this feature, or any other part of the Service, to collect full names, email addresses, photos or any other personal data about students. Class answers are subject to a monthly limit shown on the Share page and are deleted automatically after 12 months, or sooner if you delete them, the link, or your account. See the Privacy Policy for details on both counts and class answers.
• The "Share to Google Classroom" and "Share to Microsoft Teams" buttons are provided by Google and Microsoft. Their use is governed by those companies' terms.

5. Simulations you create with AI

• You can create new simulations from a description, or remix a Library simulation or one of your own. The Service sends your description and, for a remix, the source simulation to an AI model and checks the result before saving it.
• Your prompts and the simulations produced for you ("Your Simulations") are yours to use, including commercially. Between you and us, you own Your Simulations to the extent the law allows, subject to our rights in any Library material a remix is based on. A remix of a Library simulation is covered by the same licence as the Library (section 3): you may use and share it anywhere, including commercially, through the Service, but you may not copy it out of the Service or sell it on its own.
• You grant us a licence to store, process, display and deliver Your Simulations so that the Service works: for you in My simulations, and for the people who open the links you share. We do not publish Your Simulations in the Library unless you propose one for it and we accept it; in that case you grant TEXVN a free, perpetual, worldwide licence to publish, translate and adapt that simulation in the Library. We do not use Your Simulations to train AI models.
• You are responsible for what you ask the AI to create and for checking Your Simulations before using them in class. AI output can be wrong, incomplete or unsuitable; we do not review it.
• Do not create simulations that are unlawful, that infringe someone else's rights, that are sexual, hateful or violent, that target or collect data from students, or that attempt to break out of the sandbox in which simulations run. We may remove such simulations and close the account.
• Your Simulations run on a separate content domain in a restricted sandbox. We may change how they are stored and delivered, and we may remove simulations that have not been opened for a very long time after notifying you.

6. Credits and payments

• Creating, remixing and editing simulations with AI uses credits. Playing simulations and sharing them never uses credits. The current prices in credits are shown on the Credits page before you start a job.
• You can buy credit packs and subscribe to the Pro plan, monthly or yearly. Current prices are on the Pricing page. Payments are processed by Paddle.com Market Ltd or its affiliates ("Paddle"), our merchant of record. Paddle's buyer terms apply to the purchase; Paddle handles your payment details, invoices, taxes and refunds under those terms.
• Credits have no cash value, cannot be transferred to another account and cannot be exchanged for money. Credits expire 24 months after they are added to your account; expired credits are removed. Promotional credits may expire sooner if we say so when granting them.
• If an AI job fails, the credits it used are returned to you automatically. Credits used by a job that succeeded are not refunded, even if you do not like the result; you can edit the simulation or try again.
• Pro renews automatically at the end of each billing period until you cancel. You can cancel at any time from the Pro page; Pro then stays active until the end of the period you have paid for. The credits included with Pro expire at the end of each monthly cycle.
• If you close your account, unused credits are lost. Refunds are described in our Refund Policy, which does not limit your rights under consumer law.

7. Acceptable use

Do not: interfere with the Service or its security; access other users' accounts or simulations; upload malware; use the Service to send unsolicited messages; misrepresent who you are; or use the Service in a way that breaks the law or these terms. We may rate-limit, suspend or block use that we believe is abusive.

8. Closing your account

You can export your data and delete your account at any time from Account. Deleting your account removes your profile, your share links, Your Simulations and your credit balance. Links you shared stop working. Some records are kept as described in the Privacy Policy (for example payment records required by tax law).

9. Changes to the Service and to these terms

We keep improving the Service and may add, change or remove features, simulations and languages. We may also change these terms. If a change is material, we will tell you by email or when you next sign in, and you will be asked to accept the new terms before you continue. Continued use after that is acceptance.

10. No warranty

The Service and all simulations are provided "as is" and "as available". To the fullest extent permitted by law we make no warranties, express or implied, about the Service, its accuracy, availability or fitness for a particular purpose. Simulations are teaching aids, not authoritative references.

11. Limitation of liability

To the fullest extent permitted by law, TEXVN is not liable for any indirect, incidental, special or consequential loss, or for any loss of data, profits or goodwill, arising from your use of the Service. Our total liability for any claim arising from the Service is limited to the amount you paid us in the twelve months before the claim, or USD 50, whichever is greater. Nothing in these terms limits liability that cannot be limited by law, including liability for death or personal injury caused by negligence or for fraud, or your statutory consumer rights.

12. Governing law and disputes

These terms are governed by the laws of Vietnam, where TEXVN is established. If you are a consumer in the European Union, the United Kingdom or another jurisdiction that grants you mandatory protections, you keep those protections and may bring a claim in your own courts. Before starting any formal proceedings, please contact us so that we can try to resolve the problem informally.

13. General

These terms, the Privacy Policy, the Refund Policy and any prices shown in the Service are the whole agreement between you and us about the Service. If any part is found unenforceable, the rest still applies. If we do not act on a breach, that is not a waiver. You may not transfer this agreement; we may transfer it to a successor of the Service, with notice to you.

14. Contact

TEX VIETNAM TECHNOLOGY JOINT STOCK COMPANY (CÔNG TY CỔ PHẦN CÔNG NGHỆ TEX VIỆT NAM; registered name without diacritics: CONG TY CO PHAN CONG NGHE TEX VIET NAM; "TEX Vietnam JSC").
Registered address: No. 367-E16, Group 11, Dong Anh Town, Dong Anh District, Hanoi City, Vietnam (Số 367-E16, tổ 11, Thị Trấn Đông Anh, Huyện Đông Anh, Thành phố Hà Nội, Việt Nam).
Email: [email protected].