Terms of Service

This is a reference translation. The Japanese version is the authoritative text; if the two differ, the Japanese governs. Read the Japanese original

Article 1 (Application)

1. These Terms apply to every aspect of the relationship between you and us concerning your use of the App.
2. Any rules, guidelines, notices or additional terms that we publish in the App from time to time form part of these Terms.
3. Where these Terms and such rules differ, the rules prevail unless stated otherwise.

Article 2 (Definitions)

1. “App” means the iOS keyboard app KeigoButton provided by us, together with all associated services.
2. “AI features” means the features of the App that, when you explicitly operate them, convert text you have entered into polite Japanese (敬語), email text, translations, summaries, rephrasings and similar.
3. “Content” means text, images, audio, video, programs, data and other information.
4. “Input Content” means text you send for the purposes of the AI features.
5. “Generated Content” means text produced by the AI features.

Article 3 (What the App is)

1. The App provides an iOS keyboard for writing Japanese, together with AI text-conversion features that run when you explicitly operate them.
2. The scope, type, performance, output and response time of the AI features may change without notice, depending on the state of the App and of external AI providers.
3. The App does not send every keystroke you make to our servers. Text is sent to our servers only when you explicitly run an AI feature.

Article 4 (Requirements)

1. You are responsible for providing, at your own cost, the device, OS, network connection, Apple ID and anything else needed to use the App.
2. To use the AI features you must enable iOS “Full Access”. If Full Access is off, the AI features are unavailable.
3. We test the App on the iOS versions we specify. We do not warrant behaviour on other versions.

Article 5 (Accounts and authentication)

1. To use the AI features you must register an account and sign in by the method we specify.
2. You are responsible for managing your credentials, and must not transfer, lend or disclose them to anyone else.
3. Anything done through your account is treated as done by the account holder. We are not liable for loss arising from that, whether to us or to you.

Article 6 (Fees)

1. The iOS keyboard app is free in full. There are no in-app purchases and no paid plan.
2. The Mac app offers a free plan and a paid subscription. Prices, billing cycle and what is included are as shown on the purchase screen in the Mac app and in the 特定商取引法 disclosure (the statutory disclosure required of sellers in Japan). Payment is processed by Stripe, Inc.
3. Cancel a paid plan from the billing management page (the Stripe customer portal) opened from the Account screen in the Mac app. After cancelling, access continues to the end of the billing period. Amounts already paid are not generally refunded.

Article 7 (About the AI features)

1. Generated Content is produced automatically by machine learning. We do not warrant that it is accurate, appropriate, current or useful, or that it does not infringe the rights of others.
2. It is your decision and your responsibility whether to use Generated Content as it is, or to check and edit it first.
3. Please try not to include in Input Content any personal data of others, confidential information, trade secrets, unreleased information, credentials or payment details.
4. We use external AI model providers and cloud providers to deliver the AI features, and Input Content may be sent to them. The Privacy Policy has the detail.
5. We may limit how often, how frequently and on how much text the AI features may be used, in order to prevent misuse or abuse.

Article 8 (Generated Content)

1. You warrant that you hold the necessary rights in the Input Content you submit, or are otherwise lawfully entitled to use it.
2. You may freely use Generated Content for personal or business purposes. We do not warrant that Generated Content does not infringe the rights of others.
3. You accept that identical or similar Generated Content may also be produced for other users.

Article 9 (Prohibited conduct)

You must not do any of the following when using the App:

• Anything unlawful or contrary to public order and morals
• Anything connected with criminal activity
• Infringing the intellectual property, likeness, privacy, reputation or other rights or interests of us, other users or third parties
• Anything likely to interfere with the operation of the App
• Reverse engineering, decompiling, disassembling or otherwise analysing the App
• Improperly obtaining, copying, altering or redistributing the App's source code, APIs, credentials or tokens
• Calling the AI features in bulk by automated means, scripts or bots
• Circumventing, or attempting to circumvent, usage limits
• Generating, or attempting to generate, unlawful, harmful, discriminatory, violent, obscene or hateful content through the AI features
• Using the AI features to impersonate someone, or to produce text intended to mislead others about who wrote it
• Entering other people's personal data or confidential information into the AI features without authority
• Using the App to develop a competing service or to collect training data
• Anything else we consider inappropriate

Article 10 (Suspension and interruption)

1. We may suspend or interrupt all or part of the App without notice if: we are carrying out maintenance or an update; force majeure such as earthquake, fire, power failure or natural disaster makes provision difficult; a network, computer or external AI service fails; or we otherwise consider suspension necessary.
2. We are not liable for any loss suffered by you or a third party as a result of such suspension or interruption.

Article 11 (Restriction and removal)

If we consider that you have breached any provision of these Terms, or where we otherwise consider it necessary, we may without notice restrict your use of all or part of the App, or delete your account.

Article 12 (Disclaimer)

1. We do not warrant, expressly or by implication, that the App is free of defects in fact or in law — including defects, errors, bugs or infringements relating to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose or security.
2. Except where we have acted intentionally or with gross negligence, we are not liable for any loss arising from your use of, or inability to use, the App.
3. Even where we are liable, our liability is limited to direct and ordinary loss actually suffered by you. We are not liable for special loss, lost profits or indirect loss.
4. Where the 消費者契約法 (Consumer Contract Act) or another mandatory provision of law means the paragraph above does not apply, our liability is capped at the total amount you have paid us directly in respect of the App.
5. We are not liable for the consequences of using the AI features for business, contractual, legal, medical, financial or other significant decisions.

Article 13 (Changes and discontinuation)

We may change what the App does, or stop providing it, without notifying you. We are not liable for any loss you suffer as a result.

Article 14 (Changes to these Terms)

1. We may change these Terms at any time without notifying you, where we consider it necessary.
2. If you use the App after a change, you are treated as having agreed to the changed Terms.
3. Where a change is significant, we will notify you in the App, on our website or by another appropriate means.

Article 15 (Personal data)

We handle personal data obtained in connection with your use of the App in accordance with our separate Privacy Policy.

Article 16 (Notices)

Notices between you and us are given by the means we specify. Unless you have notified us of a change in the manner we specify, we treat the contact details currently registered as valid and send notices there.

Article 17 (No assignment)

You may not assign or pledge your position under these Terms, or any right or obligation arising under them, to a third party without our prior written consent.

Article 18 (Severability)

If any provision of these Terms, or part of one, is held invalid or unenforceable under the 消費者契約法 or other law, the remaining provisions, and the remainder of the provision partly held invalid or unenforceable, remain in full effect.

Article 19 (Governing law and jurisdiction)

1. These Terms are governed by and construed in accordance with the laws of Japan.
2. Any dispute concerning the App is subject to the exclusive jurisdiction of the court having jurisdiction over the location of our head office.

Article 20 (Contact)

For questions about these Terms, please contact us.

Company: Core7, Inc. — Representative: Yihuan Sun — Email: keigobutton@gmail.com