Privacy Policy

Last updated: October 20, 2026

1. Introduction

AMC Corp LLC, a Colorado limited liability company ("AMC Corp", "we", "us", or "our") operates the Sina platform at sina-design.app (the "Service"). We are the controller of the personal data described in this policy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Service.

By accessing or using the Service, you acknowledge that you have read, understood, and agree to be bound by this Privacy Policy. If you do not agree with the practices described herein, please do not use the Service.

2. Information We Collect

Account Information: When you create an account, we collect your name, email address, and profile picture through your OAuth provider (such as Google). We may also collect information you provide when updating your profile or contacting support.

User Content: We store the content you create using the Service, including chat conversations, AI prompts, generated code, images, video, 3D models, PBR materials, audio (music and sound effects), design canvas documents, uploaded files, and published projects.

Collaboration Data: When you collaborate in real time on the design canvas, we process and share collaboration signals — such as presence, cursor position, selections, and live edits — with the other participants in your session so that everyone sees a synchronized document.

Usage Data: We automatically collect information about how you interact with the Service, including pages visited, features used, credit consumption, session duration, click patterns, and performance metrics.

Device and Technical Information: We collect information about the device and browser you use to access the Service, including device type, operating system, browser type, screen resolution, IP address, and general location data derived from your IP address.

Payment Information: If you buy a paid plan or credits, your payment details are collected and processed by our payment provider, Whop (whop.com), under its own privacy policy. We receive only what we need to manage your purchase, such as your plan, the amounts paid, and the status of your payments. We never receive or store your full card number or banking details.

3. How We Use Your Information

We use the information we collect to:

  • Provide, operate, maintain, and improve the Service
  • Record your Content training choice (see Section 4)
  • Process transactions, manage your subscription, and track credit usage
  • Send you technical notices, security alerts, and support messages
  • Monitor and analyze usage trends to improve user experience and Service performance
  • Detect, prevent, and address fraud, abuse, and technical issues
  • Enforce our Terms of Service and protect the rights, property, and safety of AMC Corp LLC and our users
  • Comply with legal obligations and respond to lawful requests from public authorities

4. AI Processing and Third-Party AI Providers

When you use AI features, your prompts, uploaded images and files, and relevant context are sent to third-party AI providers for processing. These providers currently include:

  • Anthropic for Claude-powered code generation, chat, and analysis
  • Google for Gemini-powered code generation, image generation, and embeddings
  • OpenAI for GPT-powered code generation and chat
  • Cloudflare for Workers AI models used in chat, code, and image generation, and for AI Gateway, which routes requests to the providers above

These providers process your data according to their own privacy policies and terms. We recommend reviewing the privacy policies of these providers to understand how they handle your data.

Content training: We do not currently use the content you create in Sina, such as your prompts and the things you generate, to train AI models, and the AI providers above process it under terms that do not allow them to train on it. The Content training setting in your account settings records your choice in advance: if we ever start training on user content, we will notify you first and only use content from accounts where the setting is on. The setting is on by default for individual accounts and can be turned off at any time. Content training is disabled by default for Enterprise accounts. Content used for training is de-identified to protect your privacy: it is separated from your account and personal information is filtered out. Your account details and payment information are never used for training. See our Content training page for more information.

5. Data Sharing and Disclosure

We do not sell your personal information. We may share your information in the following limited circumstances:

  • Service Providers: With trusted third parties who assist in operating the Service, including hosting, database, storage, and AI infrastructure (Cloudflare), sign-in (Google), payment processing and purchase attribution (Whop), and AI processing (as described above)
  • Community Content: Content you choose to publish to the community is visible to other users. Your profile name and avatar are displayed alongside published content
  • Legal Requirements: When required by law, regulation, legal process, or governmental request
  • Protection of Rights: When necessary to protect the rights, property, or safety of AMC Corp LLC, our users, or the public
  • Business Transfers: In connection with a merger, acquisition, reorganization, or sale of assets, your information may be transferred as part of that transaction. We will notify you of any such change

6. Data Retention

We retain your account information and content for as long as your account is active or as needed to provide the Service. Deleted projects are soft-deleted and may remain in our systems for up to 30 days before permanent deletion. You may delete your account and request deletion of your associated data at any time by contacting sina@amcorp.pro.

Some data may be retained in encrypted backups for a limited period after deletion. We may also retain certain information as required by law or for legitimate business purposes such as fraud prevention and resolving disputes.

7. Data Security

We implement industry-standard technical and organizational security measures to protect your data, including:

  • Encryption in transit (TLS/HTTPS) and at rest
  • Access controls and authentication for all internal systems
  • Regular security reviews of our infrastructure and code
  • Per-account access checks on every request to keep each user’s data isolated

However, no method of transmission over the internet or method of electronic storage is 100% secure. While we strive to use commercially acceptable means to protect your data, we cannot guarantee its absolute security. If you become aware of a security vulnerability, please report it to sina@amcorp.pro.

8. Cookies and Tracking Technologies

Essential Cookies: We use essential cookies to maintain your session, authentication state, and user preferences. These are necessary for the Service to function properly.

Analytics: Our pages load the Whop pixel, a script from our payment provider that records page visits so purchases made through Whop can be attributed to them. It may use cookies or similar identifiers. We do not use Google Analytics, Google Tag Manager, Amplitude, or other third-party product analytics.

No Advertising Cookies: We do not use advertising cookies, and we do not sell your personal information or share it for cross-context behavioral advertising.

9. Your Rights and Choices

Depending on your jurisdiction, you may have the following rights regarding your personal information:

  • Access: Request a copy of the personal information we hold about you
  • Correction: Request correction of inaccurate or incomplete personal information
  • Deletion: Request deletion of your personal information, subject to certain legal exceptions
  • Portability: Request a portable copy of your data in a structured, commonly used format
  • Objection: Object to or restrict processing of your data in certain circumstances
  • Withdraw Consent: Where processing is based on consent, withdraw your consent at any time

To exercise any of these rights, please contact us at sina@amcorp.pro. We will respond to your request within 30 days or as required by applicable law. We may ask you to verify your identity before fulfilling your request.

10. California Residents (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA), including the right to know what personal information we collect, the right to request deletion, and the right to opt out of the sale of personal information. As stated above, we do not sell personal information. To exercise your CCPA rights, contact us at sina@amcorp.pro.

11. European Residents (GDPR)

If you are located in the European Economic Area (EEA), United Kingdom, or Switzerland, we process your personal data under the following legal bases: performance of a contract (providing the Service), legitimate interests (improving and securing the Service), consent (where you have opted into specific features), and compliance with legal obligations.

You have the rights described in Section 9 above and may also lodge a complaint with your local data protection authority if you believe your rights have been violated.

12. Children's Privacy

The Service is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13 without verifiable parental consent, we will take steps to promptly delete that information. If you believe we may have information from a child under 13, please contact us at sina@amcorp.pro.

13. International Data Transfers

Your information may be transferred to and processed in the United States and other countries where our service providers operate. These countries may have data protection laws that differ from those in your jurisdiction. When we transfer data internationally, we ensure appropriate safeguards are in place, including standard contractual clauses or other legally recognized transfer mechanisms, to protect your data in accordance with applicable data protection laws.

14. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technologies, legal requirements, or other factors. We will notify you of material changes by posting the updated policy 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 the updated policy is posted constitutes your acceptance of the changes.

15. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy or our data practices, 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

Privacy inquiries: sina@amcorp.pro

General support: sina@amcorp.pro

Security issues: sina@amcorp.pro