Privacy Policy

Yuya Hiramatsu created a "Useful Diary" as a free app.
This page is to tell about the collection, use, and disclosure of personal information, to consider using our app.

Management of personal information

This application keeps customer personal information accurate and up-to-date, and to prevent maintenance and management system of security system, etc. in order to prevent unauthorized access, loss, corruption, tampering and leakage of personal information. We take necessary measures and implement safety measures and perform strict management of personal information.
Also, this app uses the camera function, but does not store and send images.

Prohibition of disclosure and offer to third parties of personal information

This app does not properly manage the personal information received from the customer and disclose personal information to a third party, unless the following is true.
* If you have the consent of the customer
* If we disclose the company to outsource businesses to provide the service to be desired
* If it is necessary to disclose based on law

Safety measures for personal information

This app takes full measures to secure to ensure personal information accuracy and safety.

About ads listed in this application

(1) Purpose of use of advertisement delivery company
This app uses advertising delivered advertising services.
Such advertisement distributors may use "cookies", which are information related to access to this site and other sites, in order to display advertisements for products and services according to the interests of users. (Name, address, email address, phone number are not included.)
Customers can disable cookie functionality by changing your settings.
However, please note that all or part of the service may not be available.
Please refer to the settings for the use browser for information on the Cookie function stop.

(2) Usage of action targeting advertisement etc. provided by advertisement delivery company
Customers may use services such as behavioral targeting advertisements provided by advertisement distributors for the purpose of advertising and understanding the usage status of this application, and the customer agrees to this. In that case, the advertisement distribution company may acquire and use the customer's history information, etc., but the history information, etc. acquired by the advertisement distribution company does not include any information that identifies a specific individual. In addition, they are managed based on the privacy policy of the advertisement distributor. If you wish to disable these behavioral advertising and other services, you can opt out yourself. Please refer to this (https://support.google.com/adsense/troubleshooter/1631343) for opt-out method.

Link to other sites

This application may contain links to other sites. Click on the third party link to move to that site. Please note that these external sites are not operated by me. Therefore, we strongly recommend that you check the privacy policy for these websites. I also manage the content, privacy policy, or practices of any third party site or service, and not responsible.

Contact Us

Please contact the following information about the handling of personal information of our app.
Yuya Hiramatsu: hira3.app@gmail.com

September 6, 2021