Erdmates Terms of Service

Version 1.3 | Announced: October 15, 2026 | Effective: October 15, 2026

Chapter 1: General Provisions

Article 1 (Purpose)

These Terms of Service govern the rights, obligations, and responsibilities between Erdmates (hereinafter "Company") and members regarding the use of AI-powered ERD (Entity Relationship Diagram) collaborative editor service (hereinafter "Service").

Article 2 (Definitions)

The terms used in these Terms are defined as follows:

"Service" means the AI-powered ERD collaborative editor and all related supplementary services provided by the Company.
"Member" means a person who has agreed to these Terms and entered into a service agreement with the Company.
"Project" means a work unit containing ERD diagrams and related data created by a member.
"Team" means a group of members who jointly manage one or more projects.
"Paid Service" means services provided by the Company for a fee, including Plus, Pro, and Enterprise plans.
"AI Features" means service features utilizing artificial intelligence, such as natural language-based ERD generation, SQL conversion, and optimization suggestions.
"Real-time Collaboration" means a feature that allows multiple members to edit a single project simultaneously.
"Account" means the combination of email address and password used by a member to access the service.

Article 3 (Posting and Amendment of Terms)

The Company shall post the contents of these Terms on the service's initial screen or connected pages so that members can easily view them.
The Company may amend these Terms within the scope that does not violate applicable laws.
When amending the Terms, the Company shall announce the effective date and reasons for amendment along with the current Terms through service announcements or email at least 7 days before the effective date. However, for amendments unfavorable to members, announcement shall be made at least 30 days in advance.
If a member does not agree to the amended Terms, the member may terminate the service agreement. Continued use of the service after the effective date of the amended Terms shall be deemed as consent to the changes.

Article 4 (Interpretation of Terms)

The Company may establish separate terms and policies for individual services, which shall take precedence over these Terms in case of conflict.
Matters not specified in these Terms shall be governed by individual terms, applicable laws, or commercial practices.

Article 5 (Conclusion of Service Agreement)

A service agreement is concluded when a prospective member agrees to these Terms, applies for membership, and the Company approves such application.
The Company may refuse or subsequently terminate a service agreement in the following cases:
1. The applicant has previously lost membership under these Terms
2. The applicant uses a false name or another person's identity
3. The applicant provides false information or fails to provide required information
4. A child under 14 years old applies without consent from a legal guardian
5. Approval is impossible due to the applicant's fault or other violations of these Terms

Supplementary Provisions

These Terms shall be effective from February 10, 2026.

Revision History

Version 1.0.0 (February 9, 2026): Initial enactment
Version 1.1.0 (February 10, 2026): Clarification of third-party data sharing and marketing consent provisions

Addendum (Revision v1.2)

Article 20-2 (Withdrawal of Subscription and Partial Refund) — Korean E-Commerce Act §17

Members may withdraw their subscription within 7 days from the first payment date.
- If the service was not used: full refund
- If the service was used: pro-rata refund — amount − (amount × days_used / 30)
  e.g., subscribing to ₩9,900/month and withdrawing after 3 days: refund = 9,900 − (9,900 × 3 / 30) = ₩8,910
- Annual plan partial refund: refund of remaining months after deducting used months (e.g., refund after 2 months of use → 10 months refunded)
Refund processing is completed within 3 business days from request receipt (E-Commerce Act §18).
Refund fees are borne by the company; no separate fee will be charged to the member.
This service delivers digital content immediately upon payment, so withdrawal may be limited after delivery begins. However, refunds are available if the service is defective or differs from advertising.

Article 20-3 (Pre-Notification of Auto-Renewal Payment) — E-Commerce Act §13-2

The company will notify members by email 7 days before each subscription renewal. The notice includes:
- Plan name and amount to be charged
- Scheduled renewal date
- Last 4 digits of the registered payment method
- Cancellation instructions (Settings > Subscription)
Members may cancel auto-renewal at any time before renewal from Settings > Subscription with no additional charges.
A receipt is automatically sent by email immediately after each payment.

Article 21-2 (AI Feature Usage and Generated Content Rights)

AI features are powered by OpenAI, Google Gemini and Anthropic Claude APIs. Member input data is not used for model training per the recipients' API terms.
Copyright of ERD/SQL/document results generated through AI belongs to the member. However, purely AI-generated portions may not meet the work requirements under Korean Copyright Act §2; only portions with the member's creative contribution are legally protected.
Members are responsible for verifying the legal adequacy (copyright, patent infringement, etc.) of AI-generated content.

Article 22-2 (Age Restriction) — PIPA §22-2

Children under 14 years of age cannot register for this service. Age verification (14 or older) is required during signup.

Effective Date

This revision takes effect 7 days after the announcement date. Members will be notified by separate email or in-app notice before the effective date. Continued use of the service without objection constitutes agreement to the revised terms.

Addendum (Revision v1.3)

Anthropic Claude has been added to the APIs powering AI features in Article 21-2, and the year in the header and revision history has been corrected (2025 → 2026). This revision takes effect on October 15, 2026.