Terms of Service

Agreement to Terms

By accessing or using Deddal ("the Service"), you agree to be bound by these Terms of Service ("Terms"). If you disagree with any part of these terms, you may not access the Service.

Description of Service

Deddal is a speedcubing learning platform that provides:

• CFOP algorithm library (OLL, PLL, F2L cases)
• Spaced repetition learning system
• Progress tracking and statistics
• Interactive quizzes and practice tools
• Case visualization and algorithm demonstrations

User Accounts

Registration

To use certain features, you must create an account. You agree to:

• Provide accurate, current, and complete information
• Maintain and update your information to keep it accurate
• Maintain the security of your password
• Accept responsibility for all activities under your account
• Notify us immediately of any unauthorized use

Account Termination

We reserve the right to suspend or terminate your account if:

• You violate these Terms
• You engage in fraudulent or illegal activities
• Your account remains inactive for an extended period
• We discontinue the Service

Acceptable Use

You agree NOT to:

• Use the Service for any illegal purpose
• Violate any laws in your jurisdiction
• Infringe on intellectual property rights
• Transmit malware, viruses, or harmful code
• Attempt to gain unauthorized access to our systems
• Interfere with or disrupt the Service
• Scrape, data mine, or extract data without permission
• Impersonate others or provide false information
• Harass, abuse, or harm other users
• Use automated systems (bots) without authorization

Intellectual Property

Our Content

The Service and its original content, features, and functionality are owned by Deddal and are protected by international copyright, trademark, and other intellectual property laws.

Algorithm Data

The CFOP algorithms and case data provided are compiled from public domain speedcubing resources. While individual algorithms are not copyrightable, our specific compilation, organization, visualization, and presentation are protected.

User Content

You retain rights to any content you create (notes, preferences). By using the Service, you grant us a license to use, store, and display your content as necessary to provide the Service.

Service Availability

We strive to provide reliable service, but we do not guarantee:

• Uninterrupted or error-free operation
• Accuracy or completeness of content
• Permanent availability of any feature
• Compatibility with all devices and browsers

We reserve the right to modify, suspend, or discontinue any part of the Service with or without notice.

Disclaimers and Limitations

Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, DEDDAL SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS OR REVENUES, WHETHER INCURRED DIRECTLY OR INDIRECTLY, OR ANY LOSS OF DATA, USE, OR OTHER INTANGIBLE LOSSES.

Indemnification

You agree to indemnify and hold harmless Deddal and its affiliates from any claims, damages, losses, liabilities, and expenses (including legal fees) arising from:

• Your use of the Service
• Your violation of these Terms
• Your violation of any rights of another party
• Your content or conduct on the Service

Privacy

Your use of the Service is also governed by our Privacy Policy. Please review our Privacy Policy to understand our data practices.

Third-Party Services

The Service may contain links to third-party websites or services. We are not responsible for:

• Content or practices of third-party sites
• Privacy policies of third-party services
• Availability or functionality of external resources

Modifications to Terms

We reserve the right to modify these Terms at any time. We will notify users of significant changes via:

• Email notification to registered users
• Prominent notice on the Service
• Updated "Last updated" date on this page

Your continued use of the Service after changes constitutes acceptance of the new Terms.

Governing Law

These Terms shall be governed by and construed in accordance with applicable laws, without regard to conflict of law provisions. Any disputes arising from these Terms or your use of the Service shall be resolved through binding arbitration or in courts of competent jurisdiction.

Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and Deddal regarding the Service and supersede all prior agreements and understandings.

Contact Us

If you have questions about these Terms, please contact us at:

Email: legal@deddal.app
Website: https://deddal.app

Acknowledgment

BY USING THE SERVICE, YOU ACKNOWLEDGE THAT YOU HAVE READ THESE TERMS OF SERVICE AND AGREE TO BE BOUND BY THEM.