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Terms of Service

These Terms of Service (hereby referred to as "Terms") govern the use of the Yumelog mobile application (hereby referred to as "Application") provided by Akira Kawata (hereby referred to as "Provider"). By downloading or using the Application, you agree to be bound by all the terms and conditions set forth herein. If you do not agree to these Terms, you must not use the Application.

Effective Date: 2026-05-07

Article 1 (Definitions)

  • "Application" means the mobile application named "Yumelog" developed and provided by the Provider.
  • "Service" means all features provided through the Application, including dream recording, AI analysis, pattern detection, calendar view, and other functions.
  • "User" means any individual who downloads or uses the Application.
  • "Provider" means Akira Kawata (Address: 960-2 Nishihirai, Nagareyama-shi, Chiba-ken 270-0156, Japan).

Article 2 (Scope and Agreement)

These Terms apply to all relationships between the User and the Provider regarding the use of the Application.

By downloading or starting to use the Application, the User is deemed to have agreed to these Terms.

The Privacy Policy is established separately from these Terms and applies in conjunction with them regarding the handling of data within the Application.

Article 3 (Eligibility)

The Application is intended for individuals aged 13 and older. Users under the age of 13 are not permitted to use the Application.

The Application is available worldwide. Users are responsible for complying with the laws and regulations of their own jurisdiction.

Article 4 (License Grant)

Subject to the User's compliance with these Terms, the Provider grants the User a non-exclusive, non-transferable license to use the Application solely for personal, non-commercial purposes. The license is limited to use of the Application on Apple-branded products that the User owns or controls, as permitted by the Usage Rules set forth in the Apple Media Services Terms and Conditions, except that the Application may be accessed and used by other accounts associated with the purchaser via Family Sharing or volume purchasing.

The User shall not:

  • Reverse engineer, decompile, disassemble, or attempt to extract the source code of the Application;
  • Modify, adapt, or create derivative works of the Application;
  • Redistribute, sell, lend, or sublicense the Application;
  • Use the Application for commercial purposes;
  • Use the Application simultaneously on multiple devices beyond the scope of reasonable personal use.

If the User sells, transfers, or disposes of a device on which the Application is installed, the User must delete the Application and all data stored within the Application from such device.

Article 5 (Disclaimer Regarding AI Analysis)

The AI analysis feature of the Application (including dream analysis and pattern detection) uses AI models provided by OpenAI and is provided as reference information for entertainment purposes only.

The User acknowledges and agrees to the following:

  • AI analysis results are not a substitute for medical advice, psychological diagnosis, counseling, or other professional advice. If you have mental health concerns or other health-related issues, please consult an appropriate medical institution or professional.
  • No guarantee is made regarding the accuracy, completeness, or reliability of AI analysis results. Results are automatically generated by AI and may contain inaccurate or inappropriate content.
  • The Provider assumes no responsibility for any actions or decisions made by the User based on AI analysis results.
  • The Application is a tool primarily designed for recording and managing dream journals and is not a medical device or medical application.

Article 6 (Prohibited Conduct)

The User shall not engage in any of the following activities when using the Application:

  • Violating any laws, regulations, or public order and morals;
  • Infringing upon the copyrights, trademark rights, privacy rights, or other rights of others;
  • Compromising the functionality or security of the Application (including unauthorized access, hacking, or embedding malware);
  • Causing damage to the Provider, other Users, or third parties;
  • Using the AI analysis features in a manner that violates OpenAI's Terms of Service or policies;
  • Attempting to access the OpenAI API through methods not specified by the Provider;
  • Using the Application for purposes that violate these Terms or applicable laws.

The User must comply with applicable third-party terms of agreement when using the Application. For example, the User is responsible for ensuring that their use of the Application does not violate their wireless data service agreement or other telecommunications service agreements.

If the User violates this Article, the Provider may immediately restrict or suspend the User's use of the Application without prior notice.

Article 7 (Intellectual Property)

All copyrights, trademark rights, and other intellectual property rights in the Application and related materials belong to the Provider or their rightful owners.

Copyright in dream data, tags, and other content recorded by the User through the Application belongs to the User. However, the User agrees that such data may be sent to the OpenAI API to the extent necessary for providing the AI analysis features.

The User and the Provider acknowledge and agree that, in the event of any third-party claim that the Application or the User's possession and use of the Application infringes that third party's intellectual property rights, the Provider, not Apple Inc., will be solely responsible for the investigation, defense, settlement, and discharge of any such intellectual property infringement claim.

Article 8 (Data and Privacy)

The collection, use, storage, and handling of data within the Application are governed by the Privacy Policy. The User shall review and agree to the Privacy Policy before using the Application.

Article 9 (Disclaimer of Warranties)

The Application is provided on an "AS IS" basis. The Provider makes no warranties, express or implied, regarding the functionality, accuracy, completeness, reliability, fitness for a particular purpose, or non-infringement of the Application.

The Provider assumes no responsibility for:

  • Bugs, errors, or interruptions in the Application;
  • The Application not functioning properly due to operating system changes, device specification changes, or other technical factors;
  • Loss or corruption of data stored in the Application (including data loss caused by device failure, OS updates, application uninstallation, etc.);
  • Impact on the availability of the Service due to changes, suspension, or discontinuation of third-party services (OpenAI, Google, etc.);
  • Disputes arising between Users or between Users and third parties.

Article 10 (Limitation of Liability)

Except in cases of intentional misconduct or gross negligence by the Provider, the Provider's total liability for damages arising from or related to the Application shall be limited to the total amount of fees paid by the User for the Application in the three (3) months preceding the event giving rise to the claim (or 1,000 yen if such amount is less than 1,000 yen).

The Provider shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or loss of profits arising from the use of or inability to use the Application.

Article 11 (Modification and Termination of Service)

The Provider may add, modify, or remove features of the Application at any time without prior notice.

The Provider may, at its sole discretion, discontinue the Application. In the event of a material decision to terminate the Service, the Provider will endeavor to provide advance notice within the Application or on the website.

Article 12 (Restriction and Termination of Use)

The User may terminate the use of the Application at any time by uninstalling it.

If the User violates these Terms, the Provider may immediately suspend the User's use of the Application or terminate the license granted under these Terms without prior notice.

The provisions of Article 5 (Disclaimer Regarding AI Analysis), Article 7 (Intellectual Property), Article 9 (Disclaimer of Warranties), Article 10 (Limitation of Liability), Article 14 (Apple Provisions), and Article 17 (Governing Law and Jurisdiction) shall survive the termination of these Terms.

Article 13 (Amendment of Terms)

The Provider may amend these Terms at any time at its sole discretion. The amended Terms shall take effect upon being posted on this page.

In the event of material changes, the Provider will endeavor to provide advance notice within the Application or on the website. Continued use of the Application after changes have been posted constitutes the User's acceptance of the amended Terms.

Users are advised to review these Terms regularly. Continued use constitutes acceptance of all changes.

Article 14 (Apple Provisions)

The User and the Provider acknowledge that these Terms are concluded between the User and the Provider only, and not with Apple Inc. ("Apple"). The Provider, not Apple, is solely responsible for the Application and the content thereof. These Terms do not provide for usage rules that are in conflict with the Apple Media Services Terms and Conditions as of the Effective Date.

The Provider shall be solely responsible for providing any maintenance and support services with respect to the Application, as required under applicable law. The User and the Provider acknowledge that Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the Application.

The Provider is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. In the event of any failure of the Application to conform to any applicable warranty, the User may notify Apple, and Apple will refund the purchase price for the Application to the User. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the Application, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty will be the Provider's sole responsibility.

The User and the Provider acknowledge that the Provider, not Apple, is responsible for addressing any claims of the User or any third party relating to the Application or the User's possession and/or use of the Application, including but not limited to: (i) product liability claims; (ii) any claim that the Application fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer protection, privacy, or similar legislation. These Terms do not limit the Provider's liability to the User beyond what is permitted by applicable law.

The User and the Provider acknowledge and agree that Apple, and Apple's subsidiaries, are third-party beneficiaries of these Terms, and that, upon the User's acceptance of the terms and conditions of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against the User as a third-party beneficiary thereof.

Article 15 (Legal Compliance)

The User represents and warrants that:

  • He/she is not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a "terrorist supporting" country;
  • He/she is not listed on any U.S. Government list of prohibited or restricted parties.

Article 16 (Severability)

If any provision of these Terms is found to be invalid or unenforceable by law, such provision shall be modified to the minimum extent necessary to conform to applicable law, and all other provisions shall remain in full force and effect.

Article 17 (Governing Law and Jurisdiction)

These Terms shall be governed by and construed in accordance with the laws of Japan.

Any and all disputes arising from or relating to these Terms or the use of the Application shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

Article 18 (Contact Information)

For questions or feedback regarding these Terms, please contact:

  • Provider: Akira Kawata
  • Address: 960-2 Nishihirai, Nagareyama-shi, Chiba-ken 270-0156, Japan
  • Email: eerf0309+Yumelog@gmail.com
  • Phone: +81 70 9009 0565