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Terms of Service

This Terms of Service (hereinafter referred to as the “Terms”) sets forth the terms and conditions for the use of the application “Plop” (hereinafter referred to as the “App”) and related services (hereinafter referred to as the “Service”) provided by Minerva Inc. (hereinafter referred to as the “Company”). Registered users (hereinafter referred to as “Users”) agree to use the Service in accordance with these Terms.

Article 1 (Applicability)

  1. These Terms shall apply to all relationships related to the use of the Service between the User and the Company.
  2. The Company may establish various rules and regulations (hereinafter referred to as “Individual Regulations”) regarding the Service in addition to these Terms. Regardless of their name, these Individual Regulations shall constitute a part of these Terms.

Article 2 (Registration, Formation of Contract, and Warranty of Capacity)

  1. The service agreement shall be formed when the User taps the button indicating agreement to these Terms (e.g., “Agree and Start”) within the App and completes the procedure to start using the Service.
  2. The User represents and warrants that, at the time of starting the use of the Service, they constitute none of the following: a minor, an adult ward, a person under curatorship, or a person under assistance (hereinafter collectively referred to as “Persons with Limited Legal Capacity”).
  3. If the User is a Person with Limited Legal Capacity, they shall obtain the consent of a legal representative, such as a person with parental authority, a guardian, a curator, or an assistant, prior to using the Service.
  4. If a User who is a Person with Limited Legal Capacity uses the Service by falsely claiming to have obtained the consent mentioned in the preceding paragraph, or by falsely claiming to be a person with full legal capacity, such User may not rescind any legal acts (including payments) performed within the Service.

Article 3 (Service Content and Plans)

The Service offers the following plans:

  1. Free PlanUsers may use the basic functions of the Service for free, but some functions may be restricted, and advertisements may be displayed.
  2. Premium Plan (Paid)By paying the usage fees separately determined by the Company, Users may use additional features such as ad removal, backup functions, and data export functions.
    • Subscription: The paid plan is provided via a subscription model that automatically renews at predetermined intervals.
    • Cancellation: Users may stop the next renewal by following the prescribed procedures determined by platform providers such as Apple Inc. or Google LLC. No refunds will be issued for cancellations made during the subscription period, and usage fees will not be prorated.

Article 4 (Data Storage and Management)

  1. Principle of Local Storage: All data recorded in the App, including text, images, and settings (hereinafter referred to as “User Data”), is stored only on the device used by the User. The Company does not backup or store User Data on its servers.
  2. Responsibility for Backup: Users are responsible for backing up their own User Data (including when using the features of the Premium Plan).
  3. Risk of Data Loss: Even if User Data is lost due to deletion of the App (uninstallation), change of device, device malfunction or loss, OS updates, App defects, or any other reason, the Company cannot recover such data and assumes no responsibility whatsoever.

Article 5 (Disclaimer of Warranty and Limitation of Liability)

The Company makes no warranties regarding the Service and assumes no responsibility whatsoever to the User.

  1. No Warranty: The Company does not warrant, expressly or implicitly, that the Service is free from de facto or legal defects (including defects related to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, security, errors, bugs, or infringement of rights).
  2. Limitation of Liability: The Company shall not be liable for any damages (including, but not limited to, loss of data, device malfunction, mental distress, health effects, or lost profits) incurred by the User arising from the Service.
  3. Not Medical Advice: The App is not a medical device, and the information provided is not a substitute for a doctor’s diagnosis. The Company assumes no responsibility for any effects on the User’s health condition resulting from the use of the App; all use is at the User’s own risk.
  4. Consumer Contract Act: Even if the provisions of this Article are deemed invalid under the Consumer Contract Act of Japan, the Company shall be liable for damages caused to the User by the Company’s negligence (excluding gross negligence) due to default or tort only up to the amount of usage fees received from the User in the month in which the damages occurred (in the case of the Premium Plan). In no event shall the Company be liable for damages to Users of the Free Plan.

Article 6 (Prohibited Acts)

Users shall 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, or other intellectual property rights contained in the Service.
  4. Acts that destroy or interfere with the functions of the servers or networks of the Company, other Users, or third parties.
  5. Acts of analyzing the source code, such as decompiling, disassembling, or reverse engineering the App.
  6. Acts of using information obtained through the Service for commercial purposes.
  7. Other acts deemed inappropriate by the Company.

Article 7 (Modification and Suspension of Service)

The Company may modify the contents of the Service or suspend the provision of the Service without notifying the User, and shall not be liable for any damages incurred by the User as a result.

Article 8 (Modification of Terms)

The Company may modify these Terms at any time without notifying the User if it deems necessary. If the User starts using the Service after the modification of these Terms, the User shall be deemed to have agreed to the modified Terms.

Article 9 (Handling of Personal Information)

Personal information obtained through the use of the Service shall be handled appropriately in accordance with the Company’s “Privacy Policy.” Note that, in principle, the App does not transmit personally identifiable information to the Company’s servers.

Article 10 (Governing Law and Jurisdiction)

  1. These Terms shall be interpreted in accordance with the laws of Japan.
  2. In the event of a dispute regarding the Service, the district court having jurisdiction over the location of the Company’s head office shall be the court of exclusive agreement jurisdiction.

Established on January 20, 2026