HanFlow AI Terms of Service

• Effective date: May 25, 2026 · Last revised: July 21, 2026 (English version published July 22, 2026)
• Operator: Quantum Materials Co., Ltd. (CEO: Hwan-Yeol Park · Business Registration No. 734-88-03845 · E-commerce Registration No. 2026-Chungnam-Asan-0713)
• Address: B410, Industry-Academic Cooperation Building, 22-7 Soonchunhyang-ro, Sinchang-myeon, Asan-si, Chungcheongnam-do, Republic of Korea
• Contact: +82-70-7609-1376 · info@qmscience.net
• Service: HanFlow AI (the "Service", domain: hanflowai.com)

This English translation is provided for convenience. In the event of any conflict between the Korean version (hanflowai.com/terms) and this English version, the Korean version prevails to the extent permitted by applicable law.

Article 1 (Purpose)

These Terms govern the rights, obligations, and responsibilities between Quantum Materials Co., Ltd. (the "Company") and users of "HanFlow AI", the Company's AI-powered Korean document generation SaaS.

Article 2 (Definitions)

1. Service: All AI document automation features provided by the Company, including slide/document/educational material generation, AI chat, form filling, image generation and search, and PDF tools.
2. User: Any member or non-member who agrees to these Terms and uses the Service.
3. AI Output: Text, images, and documents produced by the Service through artificial intelligence models.
4. Credits: The in-service unit of use deducted per feature according to the published schedule. Credits may not be resold or exchanged for cash.
5. Paid Plans: Starter, Pro, Business, and Enterprise plans (monthly or yearly billing) and credit top-up packs.

Article 3 (Posting and Amendment of Terms)

1. The Company posts these Terms at the bottom of the Service's main page and at hanflowai.com/terms.
2. The Company may amend these Terms within the limits of applicable law. Amendments are announced in the Service at least 7 days before the effective date (30 days for changes unfavorable to users). Continued use of the Service after the effective date without an express objection constitutes acceptance. Users who do not agree may terminate their service agreement.

Article 4 (Registration and Accounts)

1. Registration is available via email/password or social login (Google, Kakao).
2. Children under 14 may not register. Registration includes a confirmation step (checkbox) verifying the user is at least 14 years old.
3. Users must keep their account credentials confidential and may not transfer or lend their account to third parties.
4. To protect accounts, the Company may require additional verification (such as email confirmation) when a login occurs from a new device or IP address.

Article 5 (Provision of the Service)

1. The Service is in principle available 24/7, year-round, but may be temporarily suspended for system maintenance, outages, or force majeure.
2. The Service generates output using APIs of domestic and international AI model providers, including Anthropic and OpenAI. Model composition may change for quality or cost reasons.
3. The Company discloses in the Service that outputs are generated by artificial intelligence. When users publish or provide AI Output externally, applicable law (including Korea's Framework Act on AI Development and Trust) may require labeling the content as AI-generated; compliance with such labeling obligations is the user's responsibility.

Article 6 (User Obligations and Prohibited Conduct)

Users must not:

1. Infringe others' personal information, copyright, or portrait rights
2. Attempt to generate obscene, discriminatory, violent, or illegal content, or attempt to bypass AI safety measures (jailbreaking)
3. Burden the system through automated scripts, crawling, or excessive API calls
4. Reverse-engineer the Service or extract its source code
5. Impersonate others, misuse payment methods, or abuse promotions such as the referral program (self-referral, multiple accounts, etc.)
6. Engage in any conduct that violates applicable law or public order and morals

Article 7 (Fees, Credits, and Payment)

1. Plans consist of Free (with free credits on sign-up) / Starter / Pro / Business / Enterprise. Detailed prices and included credits are posted at hanflowai.com/pricing. Prices shown in Korean won include VAT. Prices for international payment are shown in the applicable currency at checkout, inclusive or exclusive of tax as displayed.
2. Domestic (Korea) payments are processed by the Company's contracted payment gateway. International payments are processed by Paddle.com Market Ltd ("Paddle") acting as Merchant of Record; in that case the purchase contract for the checkout transaction is concluded with Paddle, and Paddle's checkout terms also apply. Card numbers and other payment-instrument details are never stored on the Company's servers.
3. Upon subscription payment, credits for the applicable period are granted in a lump sum. Credit validity is 1 month for monthly billing, 1 year for yearly billing, and 1 year for top-up packs. Unused credits expire at the end of their validity period or upon account deletion (refunds are governed by the Refund Policy).
4. The scheduled date and amount of recurring (auto-renewing) payments can be checked at any time in the Service's billing screen. Users may cancel their subscription at any time; after cancellation no further payments are charged from the next billing date.
5. Price increases or other changes unfavorable to users are announced at least 30 days before taking effect.
6. Credits granted free of charge through promotions, events, or referral rewards are subject to conditions separately set by the Company (validity, scope of use) and are not refundable.

Article 8 (Termination and Restriction of Use)

1. Users may cancel their subscription at any time in the Service's billing screen.
2. Account deletion may be requested per the instructions in Settings → "Delete account"; the Company processes such requests without delay (via customer support until a self-service deletion feature is provided).
3. The Company may restrict or terminate use after prior notice in case of violations of Article 6; serious violations may result in immediate termination.

Article 9 (Intellectual Property and Rights in AI Output)

1. User input: All rights in materials uploaded or entered by the user belong to the user. Users must upload only materials they are legally entitled to use.
2. AI Output: The right to use AI Output generated through the Service (including commercial use) belongs to the user. However, similar outputs may be generated for other users, so exclusivity is not guaranteed.
3. No-Train principle: The Company does not use user inputs or AI Output as training data (fine-tuning, etc.) for its own or third-party AI models. Statistical analysis is limited to de-identified metadata (request type, token counts, processing time).
4. External AI providers: When calling external AI provider APIs, the Company applies conditions under which the provider does not use input data for model training (API default policy or opt-out). The Company is not liable for damage caused by an external provider's policy change or violation, absent willful misconduct or gross negligence.
5. Rights in the Service: Trademarks, designs, source code, UI, and templates of the Service belong to the Company or their rightful owners; unauthorized copying, reverse engineering, and redistribution are prohibited.

Article 10 (Limitation of Liability)

1. The Company is not liable for service interruptions caused by force majeure such as natural disasters, war, external AI provider outages, or telecommunications failures.
2. The Company does not warrant the accuracy, legality, or fitness for a particular purpose of AI Output; users must review outputs at their own responsibility before use. For decisions in professional domains such as medicine, law, or finance, verification by a qualified professional is recommended.
3. The Company has no obligation to intervene in disputes between users or between a user and a third party.
4. Where the Company is liable to a user for damages, total liability is capped at the fees actually paid by that user to the Company during the 3 months immediately preceding the date the damage occurred.
5. The limitations in this Article do not apply to damage caused by the Company's willful misconduct or gross negligence, or to any liability that cannot be excluded under applicable law.

Article 11 (Dispute Resolution and Jurisdiction)

1. These Terms are interpreted in accordance with the laws of the Republic of Korea.
2. In case of a dispute, the Company and the user shall consult in good faith. Users may apply for mediation with the Korea Consumer Agency (1372) or the Electronic Documents & Transactions Dispute Mediation Committee (www.ecmc.or.kr).
3. If consultation fails and litigation is filed, and the user is a consumer, exclusive jurisdiction lies with the district court having jurisdiction over the user's address (or residence) at the time of filing. If the user's address or residence is unclear or the user resides abroad, jurisdiction follows the Korean Civil Procedure Act. Mandatory consumer-protection rules of the user's country of residence remain unaffected where they apply by law.

Addendum

1. These Terms took effect on May 25, 2026.
2. Revised July 21, 2026: facts such as service names, plans, and payment methods were aligned with the current Service, and user-protection provisions (jurisdiction, limitation of liability) were reinforced.
3. English version published July 22, 2026, including disclosure of Paddle as Merchant of Record for international payments.