DayStone

Terms of Service

Last Updated: April 4, 2026

Table of Contents

Article 1: Application of These Terms

These Terms of Service (hereinafter referred to as "these Terms") set forth the conditions for using the mobile application "DayStone" (hereinafter referred to as "this App") provided by MaruSoft (hereinafter referred to as "the Operator"). All users (hereinafter referred to as "Users") who use this App are deemed to have agreed to these Terms.

Article 2: Definitions

In these Terms, the following terms shall have the meanings set forth below:

  • "Service" refers to the countdown and anniversary tracking features, event notification features, home screen widget features, and all related functions.
  • "Premium Features" refers to additional features available through in-app purchases.
  • "Content" refers to event information, images, memos, and other data registered by Users in this App.

Article 3: Terms of Use

  1. This App is provided for personal use only.
  2. Users shall use this App at their own responsibility upon agreeing to these Terms.
  3. Users shall be responsible for preparing and maintaining the devices, communication environment, and other equipment necessary to use this App at their own expense.
  4. This App has a free version and a premium version. Premium purchases are made through Apple App Store or Google Play, and the terms of each platform apply.
  5. This App displays advertisements. Advertisements are hidden in the premium version.

Article 4: Prohibited Activities

Users shall not engage in any of the following activities when using this App:

  • Activities that violate laws or public order and morals
  • Activities that interfere with the operation of this App
  • Reverse engineering, decompiling, or disassembling this App
  • Unauthorized use or unauthorized access to this App
  • Activities that infringe on the rights of the Operator or third parties
  • Any other activities deemed inappropriate by the Operator

Article 5: Intellectual Property Rights

All intellectual property rights related to content included in this App (text, images, designs, software, etc.) belong to the Operator or the legitimate rights holders. Users may not reproduce, modify, distribute, publicly transmit, or otherwise use such content without the prior written consent of the Operator.

Article 6: Disclaimer

  1. The Operator makes no warranties regarding the accuracy, completeness, usefulness, or other aspects of the content of this App.
  2. The Operator shall not be liable for any damages arising from the use of this App, except in cases of intentional misconduct or gross negligence on the part of the Operator.
  3. The Operator shall not be liable for any loss or corruption of data managed by this App. Please back up important data yourself.
  4. The notification feature may not function accurately due to device settings or OS specifications. Please do not rely solely on this App for managing important schedules.
  5. Home screen widget content may be delayed in updating due to OS specifications.

Article 7: Service Changes and Termination

The Operator may change the content of this App or terminate the provision of this App without prior notice to Users. The Operator shall not be liable for any damages caused to Users as a result.

Article 8: Changes to These Terms

The Operator may change these Terms without prior notice to Users when deemed necessary. The revised Terms shall become effective when posted on this App.

Article 9: Governing Law and Jurisdiction

The interpretation and application of these Terms shall be governed by the laws of Japan. Any disputes relating to these Terms shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

Article 10: Contact Us

For inquiries regarding these Terms, please contact us through the following form.

Contact Form