Terms of Service

Last updated: January 11, 2026

These Terms of Service (hereinafter referred to as the "Terms") set forth the terms and conditions for the use of all applications and related services (hereinafter collectively referred to as the "Service") provided by YamLogic(hereinafter referred to as "we," "us," or "our"). Registered users (hereinafter referred to as "Users") agree to use the Service in accordance with these Terms.

Article 1 (Applicability)

  1. Users must agree to these Terms and use the Service in accordance with the provisions hereof.
  2. If a User is a minor, they must obtain the consent of a legal representative, such as a parent or guardian (including consent to these Terms), before using the Service. Furthermore, if a User who was a minor at the time of agreeing to these Terms uses the Service after reaching the age of majority, they shall be deemed to have ratified their acts of use while they were a minor.
  3. These Terms shall apply to all relationships between the User and us regarding the use of the Service.
  4. Regarding the Service, we may establish various rules and regulations (hereinafter referred to as "Individual Regulations") in addition to these Terms. Regardless of their name, these Individual Regulations shall constitute a part of these Terms.
  5. In the event of any conflict between the provisions of these Terms and the Individual Regulations in the preceding paragraph, the provisions of the Individual Regulations shall prevail unless otherwise specified in the Individual Regulations.

Article 2 (Fees and Payment Methods)

  1. Download: Downloading the Service is generally free of charge, but registration for a paid plan may be required to use some functions.
  2. In-App Purchases / Subscriptions: When using paid features or subscriptions, usage fees shall be paid through the payment method specified by each platform provider (Apple Inc., Google LLC, etc.).
    • Auto-Renewal: Subscriptions will automatically renew unless canceled at least 24 hours before the end of the current validity period.
    • Cancellation: Deleting the app does not cancel the subscription. Users must perform the cancellation procedure themselves from the settings screen of each platform (App Store subscription management screen, Google Play subscription screen, etc.).
    • Refunds: Cancellations and refunds (including pro-rata calculations) after payment completion will not be made unless allowed by the platform's terms or applicable laws.

Article 3 (Prohibited Acts) Users must not engage in the following acts when using the Service:

  1. Acts that violate laws and regulations or public order and morals.
  2. Acts related to criminal activities.
  3. Acts that infringe on copyrights, trademark rights, and other intellectual property rights contained in the Service.
  4. Acts that destroy or interfere with the functions of our server or network, or those of other Users or third parties.
  5. Acts of commercially using information obtained through the Service.
  6. Acts that may interfere with the operation of our Service.
  7. Unauthorized access or attempts to do so.
  8. Acts of collecting or accumulating personal information, etc., about other Users.
  9. Acts of using the Service for unauthorized purposes.
  10. Acts that cause disadvantage, damage, or discomfort to other Users of the Service or other third parties.
  11. Acts of impersonating other Users.
  12. Advertising, publicity, solicitation, or sales activities on the Service not authorized by us.
  13. Acts aimed at meeting unacquainted persons of the opposite sex.
  14. Other acts that we deem inappropriate.

Article 4 (Special Provisions Regarding AI Functions)

  1. If the Service includes functions utilizing Artificial Intelligence (AI) technology, the following provisions shall apply.
  2. Users agree that we do not guarantee the accuracy, completeness, reliability, usefulness, etc., of information generated by AI.
  3. Due to the nature of AI, inappropriate, offensive, or unexpected responses may be generated. Users shall use AI functions at their own discretion and responsibility.

Article 5 (Suspension of Provision of the Service, etc.)

  1. We may suspend or interrupt the provision of all or part of the Service without prior notice to Users if we determine that any of the following grounds exist:

    (1) When performing maintenance inspections or updates of the computer system related to the Service.

    (2) When provision of the Service becomes difficult due to force majeure such as earthquakes, lightning, fires, power outages, or natural disasters.

    (3) When computers or communication lines, etc., stop due to an accident.

    (4) In other cases where we determine that provision of the Service is difficult.

  2. We shall not be liable for any disadvantage or damage suffered by Users or third parties due to the suspension or interruption of the provision of the Service.

Article 6 (Usage Restrictions and Deregistration)

  1. We may restrict the User from using all or part of the Service or delete the User's registration without prior notice if the User falls under any of the following:

    (1) If any provision of these Terms is violated.

    (2) If it is found that there is a falsehood in the registered matters.

    (3) If there is a default in payment of fees, etc.

    (4) If there is no response to contact from us for a certain period.

    (5) In other cases where we deem the use of the Service to be inappropriate.

  2. We shall not be liable for any damages caused to the User by acts performed by us based on this Article.

Article 7 (Disclaimer of Warranty and Immunity)

  1. We do not explicitly or implicitly guarantee that the Service is free from factual or legal defects (including defects related to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, security, etc., errors and bugs, infringement of rights, etc.).
  2. We shall not be liable for any damages caused to the User resulting from the Service, except in cases of intentional or gross negligence by us.
  3. We shall not be responsible for any transactions, communications, or disputes, etc., that occur between the User and other Users or third parties regarding the Service.

Article 8 (Exclusion of Anti-Social Forces)

  1. Users affirm that they do not fall under organized crime groups, organized crime group members, persons for whom 5 years have not passed since they ceased to be organized crime group members, quasi-members of organized crime groups, companies related to organized crime groups, corporate racketeers, social movement advocacy groups, or special intelligence violence groups, or other persons equivalent thereto (hereinafter referred to as "Anti-Social Forces") at the time of use or provision of the Service, and affirm that they do not fall under any of the following items, and covenant that they will not fall under them in the future: (1) Having a relationship recognized as being controlled by Anti-Social Forces in management. (2) Having a relationship recognized as Anti-Social Forces being substantially involved in management. (3) Having a relationship recognized as unjustly using Anti-Social Forces, such as for the purpose of seeking illicit profits for oneself, one's own company, or a third party, or for the purpose of causing damage to a third party. (4) Having a relationship recognized as providing funds, etc., or providing benefits to Anti-Social Forces. (5) Officers or persons substantially involved in management having a relationship that should be socially condemned with Anti-Social Forces.
  2. Users covenant to us that they will not engage in any of the following acts by themselves or by using a third party: (1) Violent demands. (2) Unjust demands exceeding legal liability. (3) Use of threatening behavior or violence regarding transactions. (4) Acts of damaging the credibility of the other party or obstructing the business of the other party by spreading rumors, using fraudulent means, or using force. (5) Other acts equivalent to the preceding items.
  3. If it is found that a User falls under Anti-Social Forces or any of the items in Paragraph 1, or engages in any act falling under any of the items in the preceding paragraph, or has made a false declaration regarding the representation and covenant based on the provisions of Paragraph 1, we may terminate the usage contract for the Service without requiring any notification to the other party, regardless of whether there are grounds attributable to oneself.
  4. Users shall not be able to claim compensation for damages from us on the grounds that the usage contract for the Service was terminated pursuant to the preceding paragraph.
  5. If we suffer damages due to the termination of the contract based on the preceding paragraph, the User shall be liable to compensate us for such damages.

Article 9 (Change of Service Content, etc.)

We may terminate or change all or part of the Service for any reason. In the event of termination of the Service, we shall make a public announcement in advance as much as possible by a method we deem appropriate.

Article 10 (Modification of Terms of Use)

  1. We may modify these Terms without requiring the individual consent of Users in the following cases: (1) When the modification of these Terms conforms to the general interest of Users. (2) When the modification of these Terms does not contradict the purpose of the Service usage contract, and is reasonable in light of the necessity of the modification, the appropriateness of the content after modification, and other circumstances pertaining to the modification.
  2. We will notify Users in advance of the modification of these Terms pursuant to the preceding paragraph, the content of these Terms after modification, and the effective date thereof.

Article 11 (Prohibition of Assignment of Rights and Obligations)

Users may not assign their status under the usage contract or rights or obligations based on these Terms to a third party or provide them as collateral without our prior written consent.

Article 12 (Severability)

Even if any provision of these Terms or a part thereof is determined to be invalid or unenforceable under the Consumer Contract Act or other laws and regulations, the remaining provisions of these Terms and the remaining parts of the provisions determined to be invalid or unenforceable shall continue to be fully effective.

Article 13 (Notification or Contact)

Notifications or contacts between the User and us shall be made by the method specified by us (posting within the Service, sending emails, etc.). Unless the User submits a change notification in accordance with the method separately determined by us, we will deem the currently registered contact information to be valid and will notify or contact said contact information, and these shall be deemed to have reached the User at the time of transmission.

Article 14 (Handling of Personal Information)

We shall appropriately handle personal information obtained through the use of the Service in accordance with our "Privacy Policy."

Article 15 (Governing Law and Jurisdiction)

  1. The interpretation of these Terms shall be governed by the laws of Japan.
  2. In the event of a dispute regarding the Service, the Kyoto District Court shall be the exclusive agreed court of jurisdiction.
  3. (Language) These Terms are translated from the original Japanese version. In the event of any discrepancy or conflict between the Japanese version and this English translation, the Japanese version shall prevail.