Terms of Service

Last updated: July 30, 2026

These Terms of Service (the “Terms”) set forth the terms and conditions for use of the Yorishiro iOS application, Android application, and web application (https://yorishiro.me; the “Web Version”) provided by Yuichi Yokota (“we,” “us,” or “our”; all versions collectively, the “App”). Every person who uses the App (a “User”) must agree to these Terms before using the App.

Article 1 (Application)

  1. These Terms apply to all relationships between a User and us concerning use of the App.
  2. In addition to these Terms, we may establish rules and other provisions concerning use of the App (the “Individual Provisions”). Regardless of their title, the Individual Provisions form part of these Terms.
  3. If these Terms conflict with any Individual Provision, the Individual Provision prevails unless otherwise specified in that Individual Provision.

Article 2 (Overview of the App)

  1. The App is a journaling application designed to help Users deepen their self-understanding by recording daily events and feelings in text and analyzing them with artificial intelligence (“AI”).
  2. The App's AI features use the Claude API provided by Anthropic, PBC.
  3. The App is not a medical device and does not provide medical care, diagnosis, treatment, or psychiatric advice. AI responses in the App are provided solely as reference information for self-understanding and must not be used as a substitute for medical judgment or treatment.

Article 3 (Important Notice and Mental Health Disclaimer)

Important notice about using the App

The App is intended to support daily reflection and self-understanding. It does not provide medical care, diagnosis, treatment, or psychiatric advice. If you are experiencing severe depression or anxiety, or if you need urgent support, do not rely solely on the App. Please consult a parent or guardian, a medical institution, or an appropriate support service. Minors should use the App in consultation with a parent, guardian, or another trusted adult when necessary.

Reference: Major support services in Japan

Article 4 (Registration)

  1. As a general rule, the iOS and Android versions may be used without registering an account.
  2. The iOS version internally issues an anonymous identifier through Supabase Anonymous Authentication and uses it to manage User data. This anonymous identifier does not contain personally identifying information. In the Android version, if the User does not register an account, journal data is stored only on the User's device.
  3. Use of the Web Version requires registration with an email address and password, Apple Account, or Google Account. A User is deemed to have agreed to these Terms when the User registers for the Web Version or signs in and begins using it.
  4. Purchases and subscription management are handled through the App Store and an Apple ID (or the applicable regional Apple Account) for the iOS version, and through credit card payments processed by Stripe, Inc.'s payment system for the Web Version. The Android version does not currently offer in-app purchases.

Article 5 (Age Restrictions and Use by Minors)

  1. The App is intended for persons aged 13 or older. Persons under the age of 13 may not use the App.
  2. Users under the age of 18 must obtain the consent of a parent or guardian before using the App.
  3. Minors should discuss their experiences with the App with a parent, guardian, or another trusted adult when necessary.
  4. Any purchase by a minor, including a subscription purchase, must be made with the consent of a parent or guardian.

Article 6 (Plans and Fees)

  1. The App's basic features are available free of charge.
  2. Certain advanced features are available by subscribing to a paid monthly or annual plan.
  3. Plan names, prices, features, subscription periods, and whether a plan renews automatically are governed by the information shown on the iOS purchase screen, in the App Store, or on the Web Version's purchase screen.
  4. Monthly and annual subscriptions renew automatically unless canceled by the User. Subscriptions purchased through the iOS version may be canceled from the App Store subscription management screen. Subscriptions purchased through the Web Version may be canceled by going to Settings → Plans & Billing → Manage Subscription in the Web Version.
  5. If a free trial is offered and is not canceled before the trial period ends, it automatically converts to a paid plan and billing begins.
  6. The Android version does not currently offer in-app purchases for paid plans. Paid features purchased through the iOS or Web Version are available on other platforms when the User signs in with the same account.

Article 7 (Refunds)

  1. For purchases made through the App Store in the iOS version, refund eligibility is governed by the App Store's refund policy. Please contact Apple Support directly to request a refund. We cannot directly participate in purchase or refund processing.
  2. For purchases made through the Web Version, due to the nature of digital services, refunds for customer convenience are not accepted after service begins, except where required by law. If a subscription is canceled, paid features remain available until the end of the current billing period. No prorated refund is provided when a subscription is canceled during a billing period. If the service is unavailable for a substantial period due to circumstances attributable to us, we will address the matter individually.

Article 8 (Prohibited Conduct)

Users must not engage in any of the following conduct when using the App:

  1. Conduct that violates any law, regulation, or public order and morals
  2. Conduct related to criminal activity
  3. Conduct that infringes copyrights, trademarks, or other intellectual property rights contained in the App or its content
  4. Conduct that destroys or interferes with the functionality of servers or networks belonging to us, another User, or any third party
  5. Commercial use of the App's services, including resale
  6. Reverse engineering, decompiling, modifying, reproducing, or redistributing the App
  7. Fraudulently misrepresenting plan status or circumventing feature restrictions
  8. Using another person's personal information obtained through the App for any purpose other than its intended purpose
  9. Intentionally requesting that the AI generate content that is illegal, harmful, discriminatory, or defamatory toward another person
  10. Any other conduct that we deem inappropriate

Article 9 (Suspension of the App)

  1. We may suspend or interrupt all or part of the App without prior notice to Users if we determine that any of the following circumstances exists:
    • Maintenance, inspection, or updates of computer systems related to the App
    • Difficulty providing the App due to force majeure, including earthquakes, lightning, fires, power outages, or natural disasters
    • A service outage affecting an integrated third party, including Anthropic, Supabase, Apple, Google, Stripe, Vercel, or Cloudflare
    • Any other circumstance in which we determine that providing the App is difficult
  2. We are not liable for any disadvantage or damage suffered by a User or any third party as a result of suspension or interruption of the App.

Article 10 (Restrictions on Use)

We may restrict a User's access to all or part of the App without prior notice if the User falls under any of the following:

  1. The User violates any provision of these Terms
  2. Fraudulent plan-status representation or other unauthorized use is confirmed
  3. We otherwise determine that the User's use of the App is inappropriate

Article 11 (Disclaimer of Warranties and Limitation of Liability)

  1. We make no express or implied warranty that the App is free from factual or legal defects, including defects, errors, bugs, or infringement relating to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, or security.
  2. Responses from the App's AI features are provided as reference information for self-understanding and are not a substitute for medical care, diagnosis, treatment, psychological advice, legal advice, or any other professional advice. We are not liable for the consequences of any action taken or not taken by a User in reliance on an AI response.
  3. We are not liable for any transaction, communication, dispute, or other matter arising between a User and another User or third party in connection with the App.
  4. Except in cases of our willful misconduct or gross negligence, if we are liable, our liability is limited to ordinary and direct damages and will not exceed the amount of fees paid (or the equivalent of one month's fee for a monthly service).

Article 12 (Changes to the Service)

We may change, add to, or discontinue the content of the App after giving prior notice to Users, and Users agree to such changes.

Article 13 (Changes to These Terms)

  1. We may change these Terms at any time without notifying Users if we deem it necessary. A User who continues to use the App after the Terms are changed is deemed to have agreed to the amended Terms.
  2. We will announce material changes to these Terms through a notice in the App or on the Web Version.

Article 14 (Notices and Communications)

Notices and communications between a User and us will be made using the methods we specify. Unless a User reports a change in contact information in accordance with a method separately specified by us, we will treat the currently registered contact information as valid. A notice or communication sent to that contact information is deemed to have reached the User when sent.

Article 15 (Prohibition on Assignment)

Without our prior written consent, a User may not assign or pledge to any third party the User's position under the service agreement or any right or obligation under these Terms.

Article 16 (Governing Law and Jurisdiction)

  1. These Terms are governed by the laws of Japan.
  2. The Tokyo District Court has exclusive agreed jurisdiction over any dispute concerning the App.

Article 17 (Contact)

For inquiries concerning the App or these Terms, please contact us using the details below.

Operator
Yuichi Yokota
Email address
main@yokoichi.jp
Address
Disclosed upon request