Please read these Terms of Service carefully before downloading or using Namu. By using the app, you agree to be bound by these terms. If you do not agree, do not use Namu.

1. Acceptance of Terms

These Terms of Service ("Terms") constitute a legally binding agreement between you ("User") and Namu ("we," "us," or "our") governing your use of the Namu mobile application and any related services (collectively, the "Service").

By downloading, installing, or using the Service, you confirm that you are at least 13 years of age, have read and understood these Terms, and agree to be bound by them. If you are under 18, you confirm that you have your parent or legal guardian's permission to use the Service.

2. Description of Service

Namu is a Korean language learning application for iPhone that provides:

  • A Daily Word feature that presents a new Korean vocabulary item each day
  • An AI-powered text conversation feature with a simulated Korean tutor ("나무"), powered by Apple Intelligence running on-device
  • A Voice Call feature for spoken Korean practice using on-device speech recognition and text-to-speech

The AI conversation and voice call features rely exclusively on Apple Intelligence for on-device processing. No conversation data is sent to external servers.

3. Account and Eligibility

Namu does not require account registration. The app uses Apple's in-app purchase system for subscription management. Your Apple ID governs purchase history, billing, and subscription management.

You are responsible for maintaining the security of your device and Apple ID. You agree not to share your device with others in a way that provides unauthorized access to premium features.

4. Subscriptions and Payments

Namu offers a paid subscription plan ("Namu Pro") at $3.99 USD per month (Monthly plan) or at $39.99 USD per year (Annual plan). Prices may vary by country based on local App Store pricing.

  • Billing: Subscriptions are billed through Apple's App Store. Your Apple ID will be charged at the end of the trial or at the start of each billing period.
  • Auto-Renewal: Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period.
  • Cancellation: You may cancel anytime through iPhone Settings → Apple ID → Subscriptions. Cancellation takes effect at the end of the current billing period; no refunds are issued for the remaining period.
  • Price Changes: We may change subscription prices with reasonable notice. Continued use after a price change constitutes acceptance.

5. Intellectual Property

All content, design, graphics, code, and materials within the Service are owned by or licensed to Namu and protected by applicable intellectual property laws. You may not copy, modify, distribute, sell, or lease any part of the Service without our prior written consent.

The Namu name, logo, and "나무" brand identity are trademarks of Namu. Nothing in these Terms grants you any right to use our trademarks.

6. User Conduct

You agree not to use the Service to:

  • Violate any applicable law or regulation
  • Attempt to reverse engineer, decompile, or extract source code from the application
  • Circumvent technical measures or access restrictions within the app
  • Use the Service for any purpose other than personal, non-commercial Korean language learning
  • Exploit bugs or vulnerabilities; please report them responsibly to our support team

7. Disclaimer of Warranties

The Service is provided "as is" and "as available" without warranties of any kind. To the fullest extent permitted by law, we disclaim all warranties, express or implied, including but not limited to merchantability, fitness for a particular purpose, and non-infringement.

We do not warrant that the AI tutor's responses are always accurate, complete, or appropriate for all learners. The Service is intended as a supplementary learning tool and is not a substitute for formal language instruction.

The Voice Call and AI Conversation features require iOS 26 or later with Apple Intelligence enabled. We cannot guarantee availability of Apple Intelligence on your device.

8. Limitation of Liability

To the maximum extent permitted by applicable law, Namu shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of data, revenue, or profits, arising out of or related to your use of the Service.

Our total liability to you for all claims arising from use of the Service shall not exceed the amount you paid us in the 12 months preceding the claim, or $10.00, whichever is greater.

9. Third-Party Services

The Service integrates with Apple's frameworks including Apple Intelligence, Speech Recognition, and in-app purchase systems. Your use of Apple's services is governed by Apple's terms and privacy policy. We are not responsible for Apple's services or any changes Apple makes to them.

10. Modifications to the Service

We reserve the right to modify, suspend, or discontinue any part of the Service at any time with or without notice. We are not liable to you or any third party for any modification, suspension, or discontinuation of the Service.

11. Changes to These Terms

We may update these Terms from time to time. We will notify you of material changes by updating the "Last updated" date at the top of this page and, where appropriate, through an in-app notice. Continued use of the Service after changes constitutes acceptance of the updated Terms.

12. Governing Law

These Terms are governed by and construed in accordance with applicable law. Any disputes arising from these Terms or the Service shall be resolved through good-faith negotiation or, if necessary, binding arbitration.

13. Contact Us

If you have any questions about these Terms of Service, please contact us: