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Keichapp Lab (hereinafter referred to as “we”) develops and provides the app (hereinafter referred to as “the App”) and the services provided by the App (hereinafter referred to as “the Service”). By downloading or using the App, the user automatically agrees to these Terms of Service (hereinafter referred to as “the Terms”). Therefore, we recommend that the user reads the Terms in full before using the App.

Please note that the original text of these Terms is written in Japanese. If there are differences in meaning or nuance in translations into other languages, the original Japanese text will take precedence.

Free and Premium Plans

Free Plan

This app allows you to use certain features for free by viewing or watching advertisements. The type, content, and frequency of advertisements are subject to change at any time. If advertisements cannot be loaded due to network issues or other factors, access to these services may be restricted.

Premium Plan

By purchasing a paid subscription, you can use all features of this application without viewing advertisements. *The Premium Plan is only available for the iOS version. It is not available for the Android version.

Subscriptions

Monthly Subscription

By subscribing to the Premium Plan (Monthly), you can access all features of the Premium Plan every month, unless the subscription is canceled. If you cancel, you will lose access to all Premium Plan features. The monthly subscription automatically renews each month unless canceled.

Annual Subscription

By subscribing to the Premium Plan (Annual), you can access all features of the Premium Plan every year, unless the subscription is canceled. If you cancel, you will lose access to all Premium Plan features. The annual subscription automatically renews each year unless canceled.

Payment, Automatic Renewal, and Cancellation

The following conditions apply to subscriptions:

  • Payment is charged to your Apple ID account when you confirm the purchase.
  • Subscriptions renew automatically. Unless auto-renewal is turned off at least 24 hours before the end of the current period, the subscription renews automatically for the same period and the same content.
  • The renewal charge is applied within 24 hours before the end of the current period.
  • You can manage your subscription and turn off auto-renewal after purchase in your Apple ID account settings, found in your device’s Settings. We cannot cancel a subscription on your behalf.
  • If you cancel during a period, no prorated refund is provided for the remainder of that period. Cancellation takes effect at the end of the period you have already paid for.
  • If a free trial is offered, any unused portion of that trial is forfeited when you purchase a subscription.
  • Billing, refunds, and cancellations are handled according to App Store policies. We cannot issue refunds directly.
  • We may change subscription prices. In the case of a price increase, you will be notified in advance in accordance with App Store policies, and the increase will not apply at renewal without your consent.

Fees and Billing

We strive to ensure that the App is as useful and efficient as possible. Therefore, we reserve the right to change the App for any reason and to charge for the Service. If we charge for the App or Service, we will make it clear what the user is paying for.

Information Collection and Use

The App stores and processes personal data the user provides to deliver the Service. It is the user’s responsibility to keep their smartphone or tablet and access to the App secure. We do not recommend jailbreaking or rooting the device, as this can make it vulnerable to malware, viruses, and compromise the device’s security features. This may result in the App not functioning correctly or at all.

The App uses third-party services that declare their terms of service.

Links to the terms of service of third-party service providers used by the App:

Accounts

To use some features of the App (cloud backup, syncing across multiple devices, and group sharing), you must sign in with a Google account or an Apple account.

  • You are responsible for appropriately managing your account and the credentials used to sign in. We are not liable for any damage caused by unauthorized use by a third party.
  • You may use only accounts that you are duly authorized to use.
  • You may delete your account at any time from within the App. Once your account is deleted, the data associated with it cannot be restored.
  • If we find conduct that violates these Terms, we may suspend or delete the account without prior notice.

Use by Minors

The Service is not intended for anyone under the age of 16. A minor aged 16 or over may use the Service only after obtaining the consent of a parent or other legal representative in advance. The same applies to signing up for a paid subscription. If a minor uses the Service by falsely claiming to have obtained the consent of a legal representative, they may not rescind legal acts relating to the Service.

Group Sharing

The App provides a feature for sharing checklists and notes with other users through invitation codes.

  • The checklists, items, notes, images, and sorting rules belonging to a group can be viewed, edited, and deleted by every member of that group. You register shared content at your own discretion and responsibility.
  • Please share invitation codes only with the people you intend to share with. We are not liable for any damage resulting from an invitation code reaching a third party.
  • The group owner can remove members and transfer ownership. If an owner chooses “Delete the entire group” when deleting their account, the data of that group is lost for the other members as well.
  • Even if you leave a group or delete your account, the data registered in that group remains as long as other members remain in it.

Content You Register

The rights to the text and images you register in the App (hereinafter “User Content”) belong to you or to the rightful rights holder. We handle User Content only to the extent necessary to provide the Service (storage, syncing, sharing, and incident response), and we do not use it for any other purpose.

You warrant that your User Content does not fall under any of the following when you register it:

  • Content that infringes the copyright, trademark, portrait rights, privacy, or other rights of a third party.
  • Content that violates laws, regulations, or public order and morals.
  • Content that defames others or promotes discrimination.
  • Content that includes a third party’s personal information without their consent.

We are under no obligation to monitor User Content. However, if we suspect a violation of these Terms, we may review it to the extent necessary and take measures such as deletion.

Disputes Between Users

If a dispute arises between users, or between a user and a third party, in connection with group sharing, the parties concerned shall resolve it at their own responsibility and expense, and we bear no liability. This includes disputes arising from any of the circumstances described in “Group Sharing.”

Feedback

The in-app feedback feature is intended for receiving your opinions, requests, and bug reports.

  • We read everything we receive, but since this is a receive-only channel, we do not send individual replies.
  • There are limits on the number of characters you can send, the number of images you can attach, and the number of submissions within a given period.
  • We use the content we receive to improve the Service.
  • Sending advertising, solicitations, harassment, or any other content contrary to the intended purpose of this feature is prohibited.

Data Backup and Disclaimer

While we store and sync your data in the Service, we do not guarantee that your data will always be retained in full. Data may be lost due to network conditions, device malfunctions, outages of third-party services, or deletion operations performed by you or by other members of your group. For important data, we recommend that you create your own backups using the “Export data” feature in the App.

AI Features

The AI features of the App (automatic item sorting, extracting item names from text, extracting item names from images, and similar functions) use an external generative AI service. We do not warrant the accuracy, completeness, usefulness, or fitness for a particular purpose of the output produced by the AI features. Please always review the results yourself before relying on them. We may also change or discontinue the specifications of the AI features, their usage limits, and their availability without prior notice.

Prohibited Activities

You are not permitted to reproduce or modify the App, any part of the App, or our trademarks in any way. You must not attempt to extract the source code of the App, translate it into other languages, or create derivative versions. The App itself, along with all trademarks, copyrights, database rights, and other intellectual property rights related to it, belong to us. Additionally, any actions that impose an undue burden on the AI-powered features or exploit system vulnerabilities are strictly prohibited.

The following activities are also prohibited:

  • Using another person’s account without authorization, or impersonating another person.
  • Obtaining invitation codes improperly, or attempting to join a group you are not authorized to join.
  • Using automated means to create accounts, issue invitation codes, or send feedback in bulk.
  • Placing an excessive load on the servers or networks of the Service.

Disclaimer

Some features of the App require an internet connection, which may be Wi-Fi or mobile data. If the user cannot access Wi-Fi or exceeds their mobile data limit, the App may not work correctly, and we are not responsible for this. When using the App outside Wi-Fi areas, mobile data terms apply, and the user may incur data charges. Using data roaming abroad may result in additional roaming charges. The user is responsible for any charges incurred by using the App. If someone else pays for the device the user is using the App on, the user is assumed to have their permission to use the App.

We are also not responsible if the user cannot use the Service due to a dead battery on their device. The user must manage their device’s battery responsibly.

We rely on information provided by third parties and are not responsible for the completeness or accuracy of the information provided through the App, even if direct or indirect losses occur.

Limitation of Liability

Our liability under these Terms is subject to this section.

  • The scope of damages we owe to a user is limited to direct and actual damages that ordinarily arise. We are not liable for lost profits, business interruption, loss of data, or any other indirect, special, or consequential damages, even if we foresaw or could have foreseen them.
  • The amount of damages we owe to a user is capped at the total amount the user paid us for the Service during the 12 months preceding the date the damage occurred. If no payment was made during that period, the cap is JPY 1,000.
  • The two preceding items do not apply where the damage results from our willful misconduct or gross negligence.
  • Where a user uses the Service as a business, we bear no liability whatsoever for any damage arising from such use.

Indemnification

If we receive a claim from a third party, or suffer damages (including reasonable attorneys’ fees), because a user has violated these Terms or has infringed the rights of a third party in connection with their use of the Service, the user shall indemnify us for those damages.

Usage Restrictions

To ensure the stable operation of the Service, we may impose limits on the frequency of use for AI features, the issuance of invitation codes, the submission of feedback, and similar actions. This usage is managed using Firebase Authentication and Firestore. There are also limits on the number of checklists and notes you can create, the number of members in a group, and the number of characters and image sizes you can register. These limits are subject to change without notice depending on service conditions.

Changes to the App and Termination

We may update the App’s content and functions. The App is currently available on iOS/Android devices, but we may expand support to other systems or change system requirements in the future. To keep the App running smoothly, regular updates may be necessary. However, we do not guarantee the App will always support the user’s iOS/Android device version or stay up-to-date. We recommend accepting updates when available.

We reserve the right to stop providing the App or terminate its use at any time without notice. When the App is terminated, any rights or licenses granted to the user will also end, and the user must stop using the App and delete it from their device if necessary.

Changes to the Terms

We may change these Terms without obtaining the individual consent of users, pursuant to Article 548-4 of the Civil Code of Japan, in either of the following cases:

  • Where the change conforms to the general interests of users.
  • Where the change does not contradict the purpose of the contract to which these Terms apply and is reasonable in light of the necessity of the change, the appropriateness of the changed content, and other circumstances.

When we change these Terms, we will determine the content of the revised Terms and the date on which they take effect, and will make them known by posting them on this page or by notice within the App before that date. If a user uses the Service after the effective date, they are deemed to have agreed to the revised Terms. If you do not agree to the revised content, please stop using the Service and delete the App.

Notices

Notices from us to users are given by posting on our website including this page, by display within the App, or by sending a message to the email address registered by the user. Where notice is given by posting on our website or by display within the App, the notice is deemed to have reached the user at the time of that posting or display.

Assignment and Business Succession

Users may not assign, transfer, or pledge as security their status under these Terms or any rights or obligations under these Terms to a third party without our prior written consent.

If we transfer the business related to the Service to a third party (whether by business transfer, corporate split, merger, or any other cause), we may transfer to the transferee our status under these Terms, the rights and obligations under these Terms, and users’ registration information and other information, and users agree to this in advance.

Severability

Even if any provision of these Terms, or part of a provision, is held invalid or unenforceable under applicable law, the remainder of that provision and all other provisions remain in full force and effect. We and our users shall endeavor to reach a valid arrangement that comes closest to the intent of the provision held invalid or unenforceable.

Survival

The sections “Content You Register,” “Disputes Between Users,” “Data Backup and Disclaimer,” “Disclaimer,” “Limitation of Liability,” “Indemnification,” “Assignment and Business Succession,” “Severability,” this section, and “Governing Law and Jurisdiction” survive the termination of a user’s use of the Service or the deletion of their account.

If You Use the App Through the App Store

If you obtain and use the App from the App Store operated by Apple Inc. (“Apple”), the following applies:

  • These Terms are concluded between you and us, and Apple is not a party to them. We are solely responsible for the App and its content.
  • Maintenance and support for the App are provided by us. Apple has no obligation whatsoever to furnish any maintenance or support services for the App.
  • If the App fails to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price of the App to you. To the maximum extent permitted by applicable law, Apple has no other warranty obligation whatsoever.
  • We, not Apple, are responsible for addressing product liability claims, claims under consumer protection laws, and claims that the App infringes a third party’s intellectual property rights.
  • You represent and warrant that you are not located in a country subject to a U.S. Government embargo and that you are not listed on any U.S. Government list of prohibited or restricted parties.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms, and upon your acceptance of these Terms, Apple has the right to enforce these Terms against you.

Governing Law and Jurisdiction

These Terms are governed by the laws of Japan.

In the event of a dispute between us and a user regarding the Service or these Terms, the Nagoya District Court or the Nagoya Summary Court, depending on the amount in dispute, shall be the exclusive court of first instance by agreement.

However, if a user is a consumer domiciled outside Japan, this section does not deprive that user of the protections afforded to consumers by the laws of their country of domicile.

Contact Us

If users have any questions or suggestions about these Terms, please contact us via contact form .

Last updated: August 14, 2026