Last updated: October 20, 2026
By accessing or using the Sina platform at sina-design.app ("Service"), operated by AMC Corp LLC, a Colorado limited liability company ("AMC Corp", "we", "us", or "our"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, you may not access or use the Service.
These Terms constitute a legally binding agreement between you and AMC Corp LLC and apply to all visitors, users, and others who access or use the Service. By using the Service, you represent and warrant that you have the legal capacity to enter into this agreement.
Sina is an AI-powered creative studio operated by AMC Corp LLC that enables users to build websites, web apps, games, interactive 3D experiences, designs, and digital content using natural language. The Service is organized into three connected apps — Chat, Studio, and Canvas — and includes, but is not limited to:
We reserve the right to modify, suspend, or discontinue any part of the Service at any time, with or without notice.
You must create an account to access certain features of the Service. When creating your account, you must provide accurate and complete information. You are responsible for maintaining the confidentiality of your account credentials and for all activities that occur under your account.
You must be at least 13 years old to use the Service. If you are between 13 and 18 years old, you represent that you have your parent's or legal guardian's permission to use the Service. We reserve the right to terminate accounts that we discover are held by users under the age of 13.
You must notify us immediately at sina@amcorp.pro if you suspect any unauthorized use of your account. AMC Corp LLC is not liable for any loss or damage arising from your failure to protect your account credentials.
Sina offers free and paid subscription plans. Paid plans are billed in advance on a recurring monthly or annual basis, as selected at checkout, and include a monthly allocation of credits. Credits are consumed when you use AI-powered features such as code generation, image generation, video generation, 3D model and PBR material generation, music and sound effect generation, and AI editing in the design canvas. Unused monthly credits do not roll over to subsequent billing periods. One-time credit top-ups expire one year after purchase. Credits have no cash value and cannot be transferred, resold, or exchanged for money.
All fees are stated in U.S. dollars and exclude applicable taxes, which are added at checkout where required. Payments are processed by our payment provider, Whop (whop.com), and your purchase is also subject to its terms. By subscribing, you authorize us and Whop to charge your selected payment method for each billing period until you cancel. Refunds are governed by the Refund and Cancellation Policy in Section 16. We may change pricing at any time, but will provide at least 30 days' notice before any price increase takes effect on your account.
You may cancel your subscription at any time through your account settings or by contacting sina@amcorp.pro. Upon cancellation, you will retain access to paid features until the end of your current billing period. No partial refunds are issued for unused portions of a billing period, except as described in Section 16.
Your Content: You retain all ownership rights to content you create using the Service, including generated code, images, video, 3D models, PBR materials, audio (music and sound effects), design canvas documents, and published projects. AMC Corp LLC does not claim ownership of your creations. By using the Service, you grant AMC Corp LLC a limited, non-exclusive license to host, store, and display your content solely as necessary to provide the Service to you.
Our Service: The Service itself, including its software, design, branding, documentation, and all associated intellectual property, is owned by AMC Corp LLC and protected by copyright, trademark, and other intellectual property laws. The Sina name, logo, and all related marks are trademarks of AMC Corp LLC You may not copy, modify, distribute, sell, or lease any part of the Service without our prior written consent.
Feedback: If you provide feedback, suggestions, or ideas about the Service, you grant AMC Corp LLC an unrestricted, irrevocable, perpetual license to use such feedback for any purpose without compensation to you.
You agree not to use the Service to:
We reserve the right to suspend or terminate your account if we determine, in our sole discretion, that you have violated these acceptable use provisions.
When you publish content to the Sina community, you grant other users a non-exclusive, royalty-free license to view and fork your published projects for their own use. You represent that you have the right to share any content you publish to the community.
Projects are publicly accessible by default. You may control the visibility of your projects through your account settings. You are solely responsible for the content you publish and share through the Service.
AMC Corp LLC reserves the right to remove any community content that violates these Terms or that we deem inappropriate, without prior notice.
The Service integrates with third-party AI providers (such as Cloudflare Workers AI, and Anthropic, Google, and OpenAI through Cloudflare AI Gateway), our payment provider (Whop), our sign-in provider (Google), and our cloud infrastructure provider (Cloudflare). Your use of these third-party services is subject to their respective terms and policies. AMC Corp LLC is not responsible for the availability, accuracy, or practices of any third-party services.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. AMC Corp LLC DOES NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE, OR THAT ANY DEFECTS WILL BE CORRECTED.
AI-generated content may contain errors, inaccuracies, or inappropriate material. You are solely responsible for reviewing and validating any content generated through the Service before using it in production or distributing it.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, AMC Corp LLC AND ITS OFFICERS, DIRECTORS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, REVENUE, DATA, OR USE, ARISING OUT OF OR RELATED TO YOUR USE OF OR INABILITY TO USE THE SERVICE, REGARDLESS OF THE THEORY OF LIABILITY.
IN NO EVENT SHALL AMC Corp LLC'S TOTAL AGGREGATE LIABILITY EXCEED THE GREATER OF (A) THE AMOUNTS YOU PAID TO AMC Corp LLC IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM, OR (B) ONE HUNDRED U.S. DOLLARS ($100).
You agree to indemnify, defend, and hold harmless AMC Corp LLC and its officers, directors, employees, and agents from and against any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising out of or related to: your use of the Service; your violation of these Terms; your violation of any rights of another party; or any content you create, publish, or distribute through the Service.
We may suspend or terminate your account and access to the Service at any time, with or without cause, and with or without notice. Upon termination, your right to use the Service ceases immediately. You may request a copy of your data within 30 days of account termination by contacting sina@amcorp.pro.
Sections relating to intellectual property, limitation of liability, indemnification, governing law, and any other provisions that by their nature should survive termination shall survive the termination of these Terms.
These Terms shall be governed by and construed in accordance with the laws of the State of Colorado, United States, without regard to its conflict of law provisions. Any disputes arising out of or relating to these Terms or the Service shall be resolved exclusively in the state or federal courts located in the State of Colorado, and you consent to the personal jurisdiction of such courts. If you are a consumer, nothing in these Terms deprives you of the protection of the mandatory laws of your country of residence or of your right to bring proceedings in its courts.
We reserve the right to modify these Terms at any time. We will notify users of material changes by posting the updated Terms on the Service and updating the "Last updated" date at the top of this page. For significant changes, we may also notify you via email. Your continued use of the Service after such changes constitutes your acceptance of the revised Terms. If you do not agree to the revised Terms, you must stop using the Service.
If any provision of these Terms is found to be unenforceable, the remaining provisions will remain in full force and effect. Our failure to enforce any provision of these Terms shall not constitute a waiver of that provision. These Terms constitute the entire agreement between you and AMC Corp LLC regarding the Service and supersede all prior agreements.
Cancellation: You can cancel a subscription at any time from your account settings or by emailing sina@amcorp.pro. Cancellation stops future renewals and takes effect at the end of the current billing period; you keep your plan and its remaining credits until then. There is no cancellation fee.
Refund eligibility: If you have not used any of the credits included in a subscription payment, you can request a full refund of that payment within 7 days of the charge. Because credits pay for AI processing that we incur as soon as they are used, payments for billing periods in which credits have been used, partially used one-time credit top-ups, and renewals requested more than 7 days after the charge are not refundable, except where the law requires otherwise.
Billing errors: If you were charged in error, for example a duplicate charge or a renewal after you cancelled, contact us within 30 days of the charge and we will refund the erroneous amount in full.
Consumers in the EU, EEA and UK: You have a right to withdraw from a purchase within 14 days. By using credits during that period you ask us to start providing the Service immediately, and you acknowledge that you lose your right of withdrawal for the part of the Service already provided. Nothing in this policy limits the mandatory rights you have as a consumer in your country.
How to request a refund: Email sina@amcorp.pro from the address of your Sina account with the date and amount of the charge. We answer within 5 business days. Approved refunds are issued through Whop to the original payment method and usually appear within 5 to 10 business days, depending on your bank.
Chargebacks: Please contact us before disputing a charge with your bank so we can resolve it quickly. We may suspend accounts with an open payment dispute until it is resolved.
If you have questions about these Terms of Service, please contact us:
AMC Corp LLC
Colorado limited liability company, Colorado Secretary of State ID 20268034396
Registered address: 5595 E 130th Drive, Thornton, CO 80241, United States
Email: sina@amcorp.pro
Website: sina-design.app