Article 1 (Application)
These Terms of Service (the "Terms") set forth the conditions for using the "Chalkboard Doodle" app (the "App") provided by ryuckle ("we", "us", or "our"). Users ("you" or "User") agree to use the App in accordance with these Terms.
Article 2 (Service Description)
The App is a digital drawing application that allows you to enjoy drawing with realistic chalk textures. Main features include:
- Chalk-style drawing functionality
- Multiple chalk colors
- Multiple background options
- Save and share drawings
- History feature
- Undo and redo functionality
Article 3 (Prohibited Activities)
Users shall not engage in the following activities when using the App:
- Activities that violate laws or public morals
- Activities related to criminal acts
- Activities that interfere with the operation of the App
- Reverse engineering, decompiling, or disassembling the App
- Unauthorized access
- Impersonating other users
- Infringing on intellectual property rights, portrait rights, privacy, reputation, or other rights of us or third parties
- Distributing illegal, obscene, or discriminatory content using content created with the App
- Any other activities deemed inappropriate by us
Article 4 (Suspension of Service)
We may suspend or interrupt all or part of the App without prior notice to Users in the following cases:
- When performing maintenance or updates on computer systems related to the App
- When providing the App becomes difficult due to force majeure such as earthquakes, lightning, fire, power outages, or natural disasters
- When computers or communication lines are stopped due to accidents
- Any other cases where we determine that providing the App is difficult
Article 5 (Copyright)
- Copyright for the App and all related content (software, images, text, etc.) belongs to us or legitimate rights holders.
- Copyright for content created by Users using the App belongs to the Users.
Article 6 (Disclaimer)
- We do not expressly or implicitly guarantee that the App is free from defects (including defects related to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, security, errors, bugs, or infringement of rights).
- We shall not be liable for any damages arising to Users from the App, except in cases of our intentional misconduct or gross negligence.
- We shall not be liable for any damages arising to Users from changes, interruptions, or termination of the App.
- We shall not be liable for any loss of data stored on Users' devices. We recommend regularly backing up important data.
Article 7 (Changes to Service)
We may change, add to, or discontinue the content of the App without prior notice to Users, and Users agree to accept this.
Article 8 (Changes to Terms)
We may change these Terms at any time without notice to Users if we deem it necessary. Unless otherwise specified by us, the revised Terms shall take effect from the time they are posted on this page.
Article 9 (Governing Law and Jurisdiction)
- These Terms shall be interpreted in accordance with Japanese law.
- Any disputes arising in connection with the App shall be subject to the exclusive agreed jurisdiction of the court having jurisdiction over our location.
Contact Us
If you have any questions about these Terms, please contact us:
Last Updated: December 11, 2025