Terms of Service

Effective date: May 13, 2026

These Terms of Service ("Terms") govern the relationship between the developer ("we", "us") of the Yururon iOS app (the "App") and each person who uses the App ("you", "user"). By downloading, installing, or using the App, you agree to be bound by these Terms in full. If you do not agree, please do not use the App.

1. Who we are

The App is developed and operated by an individual developer. For inquiries about these Terms, contact support@yururon.app.

2. About the App

The App delivers a daily feed of academic-paper metadata (title, authors, abstract, etc.) sourced from arXiv and other academic-paper websites, preprint servers, public databases, and similar sources, together with plain-language summaries and concept artwork generated by AI from that metadata.

The App does not display the full text of papers. It provides a link to the original paper for further reading.

3. Eligibility

• The App is not primarily directed to children of any specific age group.
• If you are a minor, you must use the App with the consent of your parent or legal guardian and under their supervision.
• You agree to comply with these Terms and all applicable laws.
• You must have a device and operating environment that supports the App, including Apple services such as Sign in with Apple where required.

4. Account

• Most features of the App are available without signing in.
• Sign-in via Sign in with Apple is required for bookmarks and push notifications.
• You are responsible for managing your Apple ID and the account associated with it.
• You may delete your account at any time from the App's Settings screen. For details about data deleted, information that may be retained, and support for deletion, see sections 6 and 7 of the Privacy Policy.

5. AI-generated content (important)

All summaries, explanations, and concept artwork displayed in the App are generated automatically by AI. By using the App you acknowledge that:

• This content may contain errors, inaccuracies, deviations from the original paper, exaggerations, or omissions.
• Whenever a decision requires expert judgment, you must consult the original paper and other primary sources yourself.
• AI-generated content does not constitute medical, legal, tax, financial, investment, or other professional advice and must not be relied upon as the basis for such decisions.
• We make no warranty, express or implied, regarding the accuracy, completeness, or fitness for any particular purpose of AI-generated content.

6. Content from external sources

Paper metadata referenced in the App is fetched from arXiv and other external sources. Copyright and other rights in each paper belong to the original authors or other rights holders, and are governed by the terms of use, API policies, licenses (e.g., Creative Commons such as CC BY), and other conditions of the applicable external source.

If you cite, reproduce, or reuse an original paper or information sourced from an external source, you must comply with the rights of the original authors, rights holders, external sources, and the applicable license terms.

7. Intellectual property

• All rights in the App itself, including its UI, logo, source code, and other materials in which we hold rights, belong to us or our licensors.
• AI-generated summaries, explanations, and concept artwork belong to us or our licensors to the extent that we hold rights in them. However, we do not warrant that copyright or any other rights arise in AI-generated content, or that such content does not infringe third-party rights.
• You may view and reference the AI-generated content provided through the App for personal, non-commercial use. Commercial use, redistribution, large-scale scraping, and use as training data for machine-learning systems are prohibited.
• Rights in original papers and information sourced from external sources remain governed by the authors, rights holders, external sources, and the applicable licenses and terms.

8. Prohibited conduct

When using the App, you must not:

• Violate any law, public order, morality, or these Terms.
• Infringe the intellectual-property rights, privacy, reputation, or other rights of us or any third party.
• Interfere with the operation of the App (including by sending excessive requests, automated access, attacking our servers, or reverse engineering the App).
• Reproduce, resell, or redistribute the App's source code, API endpoints, or AI-generated content without permission.
• Impersonate another user or any third party.
• Use information obtained through the App in violation of these Terms or applicable law.
• Engage in any other conduct we reasonably consider inappropriate.

9. Advertising

Ads are shown via Google AdMob, including on paper detail screens.

• If you grant App Tracking Transparency (ATT) permission, ads may be personalized using your IDFA.
• The content of ads is determined by AdMob's delivery system. We do not control or warrant the content of any ad.

10. Push notifications

Signed-in users may receive push notifications about new papers and similar updates. You can disable notifications at any time from iOS Settings → Notifications → Yururon.

11. Changes to or discontinuation of the service

We may modify, add to, or remove features of the App, or suspend or discontinue all or part of the App, when necessary for maintenance, incident response, security, compliance with laws or App Store requirements, changes to or discontinuation of third-party services, or other operational reasons. Where reasonably possible, we will notify you in advance or afterward through the App or by another appropriate method.

The App is a service continuously improved by an individual developer, and its features, displayed content, supported environments, and availability period may change. We are not liable for damages arising from such changes, suspensions, or discontinuation where the cause is not attributable to us.

12. Account suspension

If you violate these Terms, if there is suspected abuse, a security issue, a legal violation, a risk of infringing third-party rights, or an unavoidable operational need, we may suspend or delete your account and restrict your use of the App without prior notice.

13. Disclaimer of warranties

The App is provided "as is" and "as available". To the maximum extent permitted by law, we disclaim all warranties, whether express or implied, with respect to the App and any content delivered through it (including AI-generated content), including without limitation:

• Accuracy, completeness, timeliness, or usefulness
• Merchantability or fitness for a particular purpose
• Non-infringement of third-party rights
• Uninterrupted or error-free operation
• Freedom from security defects

14. Limitation of liability

We are not liable for damages arising out of or related to your use of, or inability to use, the App (including reliance on AI-generated content) if the cause is not attributable to us.

If damages arise due to our ordinary negligence, our liability is limited to ordinary and direct damages actually incurred by you. We are not liable for lost profits, loss of data, business interruption, harm to reputation, indirect damages, special damages, or consequential damages in such cases.

If we are liable due to ordinary negligence, our total aggregate liability will not exceed JPY 1,000.

The limitations above do not apply to damages caused by our willful misconduct or gross negligence.

Some jurisdictions do not allow the exclusion of certain warranties or limitations of liability. In such jurisdictions, the above provisions apply to the maximum extent permitted by applicable law.

15. Third-party services

The App relies on third-party services including Sign in with Apple, Supabase, Google AdMob, and Apple Push Notification service. The behavior, content, and conditions of those services are subject to the applicable third party's own terms and privacy policy.

16. Privacy

The handling of information we collect from you is described in our separate Privacy Policy. By using the App, you also agree to the Privacy Policy.

17. Governing law and jurisdiction

These Terms are governed by the laws of Japan. Any dispute arising out of or related to these Terms or the App will be subject to the exclusive jurisdiction of the Tokyo District Court of Japan as the court of first instance.

18. Changes to these Terms

We may revise these Terms if the change is in users' general interests, or if the change is reasonable in light of the need for the change, the appropriateness of the revised content, and other relevant circumstances.

When we revise these Terms, we will announce the revised content and its effective date through the App, our website, email, or another appropriate method. For material changes that are disadvantageous to users, we will provide notice a reasonable period before the change takes effect. By continuing to use the App after a change becomes effective, you accept the revised Terms.

19. Severability

If any provision of these Terms is held to be invalid or unenforceable, the remaining provisions will remain in full force and effect.

20. Contact

For questions about these Terms, please contact:

support@yururon.app