Keichapp Lab (hereinafter referred to as “we”, “us”, or “our”) develops and provides the app (hereinafter referred to as “the App”) and the services provided by the App (hereinafter referred to as “the Service”).
This page (hereinafter referred to as “this Page”) is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use our Service.
If a user chooses to use our Service, then the user agrees to the collection and use of information in relation to this policy. The Personal Information that we collect is used for providing and improving the Service. We will not use or share the user’s information with anyone except as described in this Privacy Policy (hereinafter referred to as “this Policy”).
The terms used in this Policy have the same meanings as in our Terms and Conditions, which is accessible at the App unless otherwise defined in this Policy.
Please note that the original text of this policy is written in Japanese. In the event of any discrepancy in meaning or nuance in translations into other languages, the original Japanese text shall prevail.
Information Collection and Use
We collect the following information for the purposes of improving the stability of the application and managing purchases. Also, the App uses third-party services that may collect information used to identify the user.
Link to the privacy policy of third-party service providers used by the App:
We do not collect any information that reveals the content the user handles (such as filenames, bibliographic information, or image data). Therefore, we have no way of knowing the content the user processes.
Sentry
To identify app defects and improve stability, we primarily collect the following information:
- Error and Crash Information
- The section of code that caused the error (stack trace).
- Information about the state of the App at the time the error occurred.
- Device Information
- OS version and device model.
- App version.
- Device language settings and country.
RevenueCat
For the purpose of managing purchases, we primarily collect the following information:
- Purchase-related Information
- The user’s purchase history (such as purchased items, date and time of purchase, expiration date, etc.)
- Anonymous ID
- A random, non-personally identifiable identifier automatically generated by RevenueCat.
Log Data
We want to inform users that whenever they use our Service, in a case of an error in the App we collect data and information (through third-party products) on their phone called Log Data. This Log Data may include information such as the user’s device Internet Protocol (“IP”) address, device name, operating system version, the configuration of the App when utilizing our Service, the time and date of the use of the Service, and other statistics.
Cookies
Cookies are files with a small amount of data that are commonly used as anonymous unique identifiers. These are sent to the user’s browser from the websites that the user visits and are stored on their device’s internal memory.
This Service does not use these “cookies” explicitly. However, the App may use third-party code and libraries that use “cookies” to collect information and improve their services. The user has the option to either accept or refuse these cookies and know when a cookie is being sent to their device. If the user chooses to refuse our cookies, they may not be able to use some portions of this Service.
Service Providers
We may employ third-party companies and individuals due to the following reasons:
- To facilitate our Service;
- To provide the Service on our behalf;
- To perform Service-related services; or
- To assist us in analyzing how our Service is used.
We want to inform users of this Service that these third parties have access to their Personal Information. The reason is to perform the tasks assigned to them on our behalf. However, they are obligated not to disclose or use the information for any other purpose.
Security
We value the user’s trust in providing us with their Personal Information, thus we are striving to use commercially acceptable means of protecting it. But remember that no method of transmission over the internet, or method of electronic storage is 100% secure and reliable, and we cannot guarantee its absolute security.
Links to Other Websites
This Service may contain links to other sites. If a user clicks on a third-party link, they will be directed to that site. Note that these external sites are not operated by us. Therefore, we strongly advise users to review the Privacy Policy of these websites. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services.
Data Retention
We retain your personal information for the period necessary to provide and improve our services and to comply with our legal obligations. The specific retention period varies depending on the type of information and the purpose of its use, but the information will be promptly deleted or anonymized once the purpose of use has been fulfilled.
Your Privacy Rights Under the California Consumer Privacy Act (CCPA/CPRA)
This section applies to users who are residents of California, based on the California Consumer Privacy Act (CCPA) and the California Privacy Rights Act (CPRA).
Users who are residents of California are granted the following rights regarding their personal information.
- Right to Know: The right to request disclosure of the categories of personal information we have collected about you, the sources from which the personal information is collected, the purpose for collecting, selling, or sharing personal information, and the categories of third parties to whom we disclose, sell, or share personal information.
- Right to Delete: The right to request the deletion of your personal information that we have collected, subject to certain exceptions.
- Right to Correct: The right to request the correction of inaccurate personal information that we maintain about you.
- Right to Opt-Out of Sale or Sharing: We do not sell your personal information for monetary consideration, nor do we share personal information for cross-context behavioral advertising.
- Right to Limit Use and Disclosure of Sensitive Personal Information: We do not intentionally collect or use sensitive personal information as defined by the CPRA (such as precise geolocation, race, religion, genetic data, etc.).
- Right to Non-Discrimination: The right not to receive discriminatory treatment for exercising your rights under the CPRA.
Handling of Sensitive Personal Information
We do not intentionally collect sensitive personal information as defined by the CPRA (such as racial or ethnic origin, religious beliefs, genetic data, precise geolocation, etc.).
How to Exercise Your Rights
Right to Know, Delete, and Correct
If you wish to exercise these rights, please contact us through our Contact Form . We may ask for additional information to verify your identity.
Children’s Privacy
These Services do not address anyone under the age of 16. We do not knowingly collect personally identifiable information from children under 16. In the case we discover that a child under 16 has provided us with personal information, we immediately delete this from our servers. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us so that we will be able to do the necessary actions.
Changes to This Privacy Policy
We may update our Privacy Policy from time to time. Thus, users are advised to review this page periodically for any changes. We will notify users of any changes by posting the new Privacy Policy on this page.
Contact Us
If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us through our contact form .
Last updated: May 26, 2026