Terms of Service

Article 1 (Purpose)

These Terms set out the conditions and procedures for using the HnAi website (https://hnaicad.app) and the HnAiCAD trial and related services (the "Services") operated by Neuron Architecture (the "Company"), and the rights, obligations, and responsibilities of the Company and its members.

Article 2 (Definitions)

1. "Member" means a person who agrees to these Terms, registers an account, and uses the Services.
2. "Account" means the email address registered by a member, or the external sign-in account a member has linked, used to identify the member.
3. "Trial" means time-limited software the Company provides to members for evaluation.
4. "Paid Product" means full software and licenses the Company provides under a separate agreement or purchase process.
5. "Content" means all software, documents, images, and text the Company provides through the Services.

Article 3 (Posting and Amendment of the Terms)

1. The Company posts these Terms on the website where members can easily find them.
2. The Company may amend these Terms within the limits of applicable law, including the Act on the Regulation of Terms and Conditions of Korea.
3. The Company announces amendments on the website, with the effective date and reasons, at least 7 days before they take effect. Changes unfavorable to members are announced at least 30 days in advance and notified individually by email, and consent is requested again at the next sign-in.
4. A member who does not agree to the amended Terms may terminate the agreement by deleting their account.

Article 4 (Matters Not Covered)

Matters not covered by these Terms, and the interpretation of these Terms, are governed by applicable law, the Privacy Policy, the Company's operating policies, and general commercial practice. If the Company and a member (or the member's organization) have a separate agreement for paid products, that agreement prevails over these Terms.

Article 5 (Formation of the Agreement)

1. The agreement is formed when an applicant completes email or Google verification, enters their name, company or organization, and phone number, and agrees to these Terms and the required privacy items.
2. The Company may refuse an application, or later terminate the agreement, if:

• the applicant used another person's information or provided false information;
• the applicant is under 14 years of age;
• the applicant previously lost membership for violating these Terms;
• the application is clearly not for genuine evaluation, such as for developing a competing product; or
• the application violates applicable law or aims to harm public order.

Article 6 (Changes to Member Information)

Members must promptly update changed information on My page. Members bear any disadvantage caused by failing to do so.

Article 7 (Account Security)

1. Members must keep their email account and any linked external sign-in account secure, and may not transfer or lend their account to a third party.
2. Members must notify the Company immediately if they learn that their account has been stolen or used by a third party, and follow the Company's instructions.
3. Sign-in sessions last up to 90 days. Members must sign out after using a shared device.
4. The Company is not liable for damage caused by a member's failure to comply with paragraphs 1 to 3.

Article 8 (Protection of Personal Information)

The Company protects members' personal information in accordance with the Personal Information Protection Act of Korea, other applicable law, and the Privacy Policy. The Company's Privacy Policy does not apply to external sites linked from the website.

Article 9 (Obligations of the Company)

1. The Company complies with applicable law and these Terms and endeavors to provide the Services continuously and reliably.
2. The Company maintains security systems to protect personal information and publishes and complies with its Privacy Policy.
3. If the Company finds a member's opinion or complaint justified, it handles the matter promptly. If handling takes time, it informs the member of the reason and schedule.
4. The Company does not send promotional information without the member's consent.

Article 10 (Obligations of Members)

Members must not:

• register false information or use another person's information;
• redistribute, sell, or lend trial files or download links to third parties;
• reverse engineer, decompile, or disassemble the software, or circumvent its usage period or license mechanisms;
• infringe the copyright or other intellectual property rights of the Company or third parties;
• access the Services by abnormal means such as automated tools, or interfere with operations by causing excessive load;
• distribute malicious code or test or breach the security of the Services;
• use the Services for commercial purposes without the Company's prior consent; or
• otherwise violate applicable law or these Terms.

Article 11 (Provision and Changes of the Services)

1. The Company provides members with product information, trial downloads, and purchase and technical support information.
2. In principle, the Services are available 24 hours a day, every day of the year. The Company may set separate hours for some services for business or technical reasons.
3. The Company may change the Services for operational or technical reasons and announces changes that significantly affect members 7 days in advance.

Article 12 (Suspension of the Services)

1. The Company may temporarily suspend the Services for maintenance, replacement or failure of equipment, communication failures, natural disasters, national emergencies, or other unavoidable reasons.
2. The Company gives advance notice in the cases above, or notice afterward if advance notice is not possible.
3. If the Company ends the Services, such as by closing the business, it announces this 30 days in advance.

Article 13 (Trials)

1. Trials are provided free of charge to members only and may be used for 5 days after installation. If a product has a different period, the information on the download screen applies.
2. Trials may be used for evaluation only. Work produced with a trial must not be delivered commercially or provided for a fee.
3. When the trial period ends, members must delete the trial or purchase a paid product.
4. The Company may change the features, period, or eligibility of trials, or discontinue them.

Article 14 (Paid Products and Licenses)

1. Paid products are purchased through the quotation and purchase process the Company provides. Prices, payment methods, license scope and term, and support conditions are set in a separate license agreement or purchase information between the Company and the purchaser.
2. A license for a paid product grants a right of use and does not transfer ownership or intellectual property rights in the software.

Article 15 (Withdrawal and Refunds)

1. Consumers who purchase a paid product may withdraw their order within 7 days of receiving the written contract terms, under the Act on Consumer Protection in Electronic Commerce of Korea.
2. Withdrawal may be restricted under Article 17(2) of that Act once delivery of the software has begun, such as by issuing a license key or enabling a download. The Company makes this clear before purchase and offers a trial or other opportunity to test the software.
3. If the software cannot be used normally due to the Company's fault, the purchaser may request a refund or replacement regardless of the period in paragraph 1.
4. The Company refunds payment within 3 business days of receiving a withdrawal or refund request. Separate agreements, such as business-to-business contracts, prevail where they exist.

Article 16 (Notices to Members)

1. The Company may notify members at their registered email address.
2. For notices to members in general, posting on the website for at least 7 days may replace individual notice. Matters that significantly affect members are notified individually.

Article 17 (Intellectual Property)

1. Copyright and other intellectual property rights in the Services and Content belong to the Company or the rightful owners.
2. Members may not copy, distribute, transmit, modify, or create derivative works from the Content, or let third parties use it, without the Company's prior written consent.
3. Rights in drawings and other work members create with a trial belong to the member.

Article 18 (Restriction of Use)

1. If a member violates these Terms or interferes with the Services, the Company may restrict use in stages: warning, temporary suspension, then permanent suspension.
2. Notwithstanding paragraph 1, the Company may permanently suspend a member immediately for violations of law or serious violations, such as identity theft, trial redistribution, circumvention of license mechanisms, or distribution of malicious code.
3. Members may object to a restriction. If the Company finds the objection justified, it restores use immediately.

Article 19 (Termination and Account Deletion)

1. Members may delete their account on My page at any time. Personal information is then handled under the Privacy Policy.
2. The Company may terminate the agreement under Article 18. In that case it notifies the member of the reason and gives the member an opportunity to explain.
3. Separate agreements for paid products continue under their own terms after this agreement ends.

Article 20 (Damages)

1. If the Company or a member causes damage to the other by violating these Terms, that party is liable for the damage unless it was not at fault.
2. The Company is not liable for damage related to the use of free services, including trials, unless caused by the Company's intent or gross negligence.

Article 21 (Disclaimer)

1. Trials are provided "as is". The Company does not warrant that trials are fit for a particular purpose, free of errors, or compatible with a member's other software.
2. The Company is not liable for service interruptions caused by force majeure such as natural disasters or communication failures.
3. The Company is not liable for service problems caused by the member.
4. Members are responsible for the final review of, and decisions based on, drawings, calculations, and inspection results produced with the software.

Article 22 (Dispute Resolution)

1. The Company operates a customer contact point, shown at the bottom of the website, to handle members' inquiries and complaints.
2. If a dispute arises, the Company and the member will negotiate in good faith. Members may also apply for mediation to a dispute mediation body such as the Korea Consumer Agency.

Article 23 (Governing Law and Jurisdiction)

These Terms are governed by the laws of the Republic of Korea. Lawsuits about the Services are brought before the court with jurisdiction under the Civil Procedure Act of Korea.

Addendum

1. These Terms take effect on October 14, 2026.
2. These Terms also apply to members who joined before they took effect, and consent is requested again at the first sign-in after that date.

• Company: Neuron Architecture · CEO: Lee Jisu · Business Registration No.: 512-12-64534
• Contact: jw.seo@neuronarchitecture.com · +82-2-381-2791
• Announced: 2026-10-07 · Effective: 2026-10-14 · Version 2.0