These terms set the conditions for providing one-coin.app (the “Service”) and the rights and obligations between the Operator and Users. Please read these terms in full and agree to them before using the Service.The Japanese version is authoritative.English and other languages are for reference only.

Article 1 (Applicability)

1. These terms apply to all relationships between the Operator and Users regarding use of the Service, whether or not the User has an account or a paid contract. Paid features apply to Account Users. An account may be used to apply for and manage paid contracts, link devices, and for other purposes the Operator specifies.
2. Rules about the Service that the Operator posts on the Operator Website (including thePrivacy Policy, thenotation based on the Act on Specified Commercial Transactions, and each app’s pricing and help pages) form part of these terms.
3. If these terms conflict with other descriptions of the Service, the app pages and the Specified Commercial Transactions notice take precedence for the matters they cover (such as prices and features). Otherwise these terms prevail.

Article 2 (Definitions)

In these terms, the following terms have the meanings below.

1. “Service Usage Contract” means the contract between the Operator and an Account User for use of paid features, on the conditions of these terms.
2. “Intellectual Property Rights” means copyrights, patent rights, utility model rights, design rights, trademark rights, and other intellectual property rights (including the right to acquire them or to apply for registration).
3. “Transmitted Data” means text, images, and other data that a User sends to the Operator through the Service (including support inquiries). Data stored only on the user’s device and not sent to the Operator’s servers is not Transmitted Data.
4. “Operator” means Hokkaido Online / Yoshikazu Shimizu, who operates one-coin.app.
5. “Operator Website” means the website operated by the Operator at the domain one-coin.app (including the site after any change of domain or content).
6. “Account” means the mechanism the Operator issues or links (for example via Google sign-in) to identify a User on the Service. Obtaining an Account alone does not make a person an Account User.
7. “Paid Contract” means a contract for use of paid features of an app of the Service for a defined term under a paid plan set by the Operator. The term follows each app’s pricing page and checkout screen.
8. “Account User” means an individual or corporation that is within the active term of a Paid Contract for any app of the Service. If Paid Contracts exist for more than one app, the person is an Account User while any one of them remains active. When every Paid Contract’s active term has ended, the person ceases to be an Account User.
9. “User” means anyone who uses the Service (including website visitors, users of free features, persons who have an Account, and Account Users).
10. “Service” means the website, accounts, and apps (web, desktop, and similar) provided by the Operator under the name one-coin.app, and related services (including after any change of name or content).

Article 3 (Accounts and paid contracts)

1. A person who wishes to use paid features obtains an Account by agreeing to these terms and thePrivacy Policyand providing the information specified by the Operator (the “Registration Items”) in the manner specified by the Operator (as a rule, Google account sign-in). In paid desktop apps, the full text of these terms and the Privacy Policy is not embedded in the app; the User opens the Operator Website pages (Terms of UseandPrivacy Policy) in a browser or similar, reviews them, then checks the box to agree. On the web, the sign-in screen links to these terms and the Privacy Policy, and the User agrees before Google sign-in. Free apps for personal use (such as Screenshot Personal) do not require in-app agreement to these terms or the Privacy Policy. An Account is not required to use only free features (follow each app’s guidance).
2. Account creation is complete when Google sign-in finishes and the Operator creates the Account. The Account is used to apply for and manage Paid Contracts, link devices, handle support, and for other purposes the Operator specifies. Obtaining an Account alone does not make the person an Account User and does not form a Service Usage Contract.
3. When the User pays for a paid plan by the Operator’s method and the active term of a Paid Contract for that app begins, the User becomes an Account User and a Service Usage Contract is formed with the Operator. If Paid Contracts are made for more than one app, these terms apply in common.
4. The Operator may refuse to create or recreate an Account, or to enter into a Paid Contract, without disclosing the reason, if:
   1. provided Registration Items that are false, inaccurate, or incomplete in whole or in part;
   2. is a minor, adult ward, person under curatorship, or person under assistance, and has not obtained the required consent of a legal representative, guardian, curator, or assistant;
   3. is an anti-social force (organized crime groups, their members, far-right groups, or similar) or cooperates with or is involved with such a force, including by providing funds;
   4. has previously breached a contract with the Operator, or is related to such a person, in the Operator’s judgment;
   5. has previously been subject to measures under Article 10; or
   6. is otherwise deemed unsuitable for an Account or Paid Contract by the Operator.

Article 4 (Changes to Registration Items)

If Registration Items change, a User who has an Account must notify the Operator without delay in the manner specified by the Operator. For items taken from the Google account, update them at Google and then follow the Operator’s method, such as signing in again.

Article 5 (Management of the account)

1. A User who has an Account must, at their own responsibility, manage and store the account for the Service (including the Google account) appropriately, and must not let a third party use it or lend, transfer, rename, or sell it.
2. That User is responsible for damage caused by inadequate management of the account, errors in use, or use by a third party. The Operator is not liable except in cases of willful misconduct or gross negligence.

Article 6 (Fees and payment)

1. As consideration for paid features, the Account User shall pay the fees separately set by the Operator and shown on the Operator Website, by the method the Operator designates (credit card; payment processing by Stripe or another provider). Prices (including tax display), billing cycle, and what is included follow each app’s pricing page and checkout screen.
2. Paid plans renew automatically each term unless auto-renewal is stopped. The User may stop auto-renewal at any time via the payment provider’s customer portal or another method the Operator specifies. After auto-renewal is stopped, the User may keep using the paid features until the current term ends; when the term ends, that Paid Contract ends and does not renew. Plan changes and receipts are handled, as a rule, from each app’s guidance and the payment provider’s customer portal.
3. Except where cooling-off or similar statutory rights apply, refunds after delivery of a digital service follow thenotation based on the Act on Specified Commercial Transactionsand each app’s guidance.
4. Where a corporate contract exists (including bank transfer, multi-seat or multi-device terms, and similar), those conditions follow each app’s pricing page, the guidance given at signup, and thenotation based on the Act on Specified Commercial Transactions. If they differ from individual plans, the corporate terms prevail.

Article 7 (Prohibited conduct)

When using the Service, the User must not engage in any of the following, or in conduct the Operator determines falls under them.

1. Acts that violate law or relate to criminal acts
2. Fraud or threats against the Operator or a third party
3. Acts contrary to public order and morals
4. Infringing intellectual property, publicity, privacy, reputation, or other rights or interests of the Operator or a third party
5. Sending computer viruses or other harmful programs
6. Placing an excessive load on the Service’s network or systems
7. Acts that may interfere with operation of the Service
8. Unauthorized access to the Operator’s network or systems
9. Impersonating a third party
10. Using another person’s account
11. Advertising, publicity, solicitation, or business on the Service without the Operator’s prior permission
12. Providing benefits to anti-social forces
13. Improper reverse engineering or analysis beyond what law permits
14. Directly or indirectly causing or facilitating any of the above
15. Other acts the Operator deems inappropriate

Article 8 (Suspension of the Service)

1. The Operator may suspend or interrupt all or part of the Service without prior notice if:
   1. emergency inspection or maintenance of computer systems related to the Service is required;
   2. computers, communication lines, or similar fail, are misused, are overloaded, or are subject to unauthorized access or hacking, so the Service cannot be operated;
   3. force majeure (earthquake, lightning, fire, storm or flood, power outage, or other natural disaster) prevents operation; or
   4. the Operator otherwise deems suspension or interruption necessary.
2. Except for the Operator’s willful misconduct or gross negligence, the Operator is not liable for damage to Account Users from measures under this article.

Article 9 (Attribution of rights)

1. All Intellectual Property Rights in the Operator Website and the Service belong to the Operator or its licensors. Permission to use the Service under these terms does not mean a transfer or license of those Intellectual Property Rights beyond use of the Service itself.
2. The Account User represents and warrants to the Operator that they have the lawful right to send Transmitted Data and that it does not infringe third-party rights. The same applies when a User who is not an Account User sends Transmitted Data.
3. The User grants the Operator a royalty-free, non-exclusive license to use, reproduce, and otherwise use Transmitted Data as needed to provide, improve, and support the Service and to comply with law. Rights in data stored only on the device (such as screenshot images) belong to the User or the rightful owner.
4. The User agrees not to exercise moral rights of authorship against the Operator or persons who succeed to or are licensed by the Operator.
5. The Operator grants the User a non-exclusive, non-transferable license to use the Service’s desktop apps under these terms. The User may install and use them within the scope the Operator officially provides, and must not redistribute, lend, or publish modified binaries except as permitted by law. Features available in each app follow that app’s guidance.
6. Desktop apps may send technical information such as app name, version, and OS to the Operator’s servers to check for updates. Applying an update follows the User’s action or the app’s guidance.
7. The official distribution channels for the Service are the Operator Website and other channels the Operator designates. Except for the Operator’s willful misconduct or gross negligence, the Operator is not liable for damage from software obtained elsewhere.

Article 10 (Suspension of use, etc.)

1. If a User falls under any of the following, the Operator may, without prior notice, delete Transmitted Data, temporarily suspend all or part of the Service for that User, delete the Account, terminate a Paid Contract or the Service Usage Contract, or end Account User status:
   1. breach of any clause of these terms;
   2. discovery that Registration Items contain false facts;
   3. suspension of payments, insolvency, or a petition for bankruptcy, civil rehabilitation, corporate reorganization, special liquidation, or similar proceedings;
   4. no use of the Account for 6 months or more while not in an active Paid Contract term;
   5. no response for 30 days or more to inquiries or requests for contact from the Operator;
   6. falling under any item of Article 3, paragraph 4; or
   7. the Operator otherwise deems continued use of the Service inappropriate.
2. In that case, the User loses the benefit of time on all debts to the Operator and must pay them immediately.
3. Except for the Operator’s willful misconduct or gross negligence, the Operator is not liable for damage from measures under this article.

Article 11 (End of Account User status)

1. When every Paid Contract of an Account User has ended its active term, that person automatically ceases to be an Account User and the Service Usage Contract ends. No withdrawal or other special procedure is required.
2. If the User does not want automatic renewal into the next term, stop auto-renewal via the payment provider’s customer portal or another method the Operator specifies. After auto-renewal is stopped, the User may keep using the paid features until the current term ends.
3. If any debt to the Operator remains when Account User status or a Paid Contract ends, the User loses the benefit of time and must pay all such debt immediately.
4. Handling of user information after status ends follows Article 15.

Article 12 (Changes to and termination of the Service)

1. The Operator may change or terminate the Service at its convenience. If the Operator terminates the Service, it will notify Account Users in advance.
2. If the Operator terminates the Service, paid contract periods already paid for remain usable until they end. Except where law requires a refund, the Operator does not prorate refunds for unused portions of a term. If termination is attributable to the Operator, handling follows thenotation based on the Act on Specified Commercial Transactionsand support guidance on a case-by-case basis.
3. Except for the Operator’s willful misconduct or gross negligence, the Operator is not liable for damage from measures under this article.

Article 13 (Disclaimer of warranties and limitation of liability)

1. The Operator does not warrant, expressly or impliedly, that the Service fits the Account User’s particular purpose, has expected functions, commercial value, accuracy, or usefulness, complies with laws or industry rules applicable to the Account User, can be used continuously, or will be free of defects.
2. Except for the Operator’s willful misconduct or gross negligence, the Operator is not liable for damage suffered by the User in connection with the Service. Even if the Operator is liable, except for willful misconduct or gross negligence, it is not liable for incidental, indirect, special, future, or lost-profit damages.
3. Except for the Operator’s willful misconduct or gross negligence, the Operator’s liability is capped at the total amount the User paid the Operator in the 12 months before the event giving rise to the damage. If there was no payment in that period, the cap is 10,000 yen. If the Consumer Contract Act or other law requires a different result, that law prevails.
4. The Operator is not responsible for transactions, communications, or disputes between Account Users or between an Account User and a third party in connection with the Service.

Article 14 (Confidentiality)

The Account User shall treat as confidential any non-public information that the Operator discloses in connection with the Service and requests be kept confidential, except with the Operator’s prior written consent.

Article 15 (Handling of user information)

1. The Operator’s handling of user information follows the separatePrivacy Policy.
2. The Operator may, at its discretion, use and disclose information and data provided by Account Users as statistical information in a form that does not identify individuals, and Account Users shall not object.

Article 16 (Changes to these terms)

Under Article 548-4 of the Civil Code, the Operator may change these terms when the change is in the general interest of Users or is otherwise reasonably necessary. If it does, it will announce the content and effective date on the Operator Website or by another appropriate method at least 7 days before the effective date. Where law requires the Account User’s consent, the Operator will obtain consent by the method it specifies.

Article 17 (Contact / notice)

Inquiries and other communications from Account Users to the Operator, and notices from the Operator to Account Users (including changes to these terms), shall be made by the method specified by the Operator (as a rule, thesupport formand email to the registered address). Security reports may also be submitted through the same form.

Article 18 (Assignment of status under the Service Usage Contract)

1. The Account User may not assign, transfer, encumber, or otherwise dispose of their contractual status or rights or obligations under these terms to a third party without the Operator’s prior written consent.
2. If the Operator transfers the business of the Service to another company, it may transfer the contractual status, rights and obligations under these terms, and Account Users’ account and other customer information to the transferee. Account Users are deemed to have agreed to this in advance. “Business transfer” in this paragraph includes company splits and any other transfer of the business.

Article 19 (Severability)

If any provision of these terms, or part of a provision, is held invalid or unenforceable under the Consumer Contract Act or other law, the remaining provisions and the remaining part of that provision continue in full force and effect.

Article 20 (Governing law and jurisdiction)

1. These terms and the Service Usage Contract are governed by Japanese law. The United Nations Convention on Contracts for the International Sale of Goods does not apply.
2. Even if the User is outside Japan, these terms and the Service Usage Contract are governed by Japanese law.
3. Any dispute arising from or relating to these terms or the Service Usage Contract is subject to the exclusive jurisdiction of the Sapporo District Court as the court of first instance, except where that would be invalid under the Consumer Contract Act or other law.

Enacted: 3 August 2026

Revised: 2 September 2026