Terms of Use for ChessMaster Application 1. General Provisions Welcome to ChessMaster (Application). These Terms of Use (Terms) govern the relationship between you (User) and the individual developer, Brinkovskii Miron Petrovich (Developer), regarding the use of the Application. 2. Registration and Account 2.1. Access to the Applications functionality requires account registration. Use of the Application without registration is not possible. 2.2. Upon registration, the User agrees to provide accurate and up-to-date information. 2.3. The User is responsible for maintaining the confidentiality of their account credentials and agrees not to share them with third parties. 3. Subscriptions and Payment 3.1. The Application offers paid subscriptions that grant access to additional content and features. 3.2. Subscription payments are processed through Apple Pay and Google Pay. 3.3. All payments are final and non-refundable, except as required by law. 4. Content and Intellectual Property Rights 4.1. All materials within the Application, including video lessons, puzzles, position analyses, and other elements, are the intellectual property of the Developer. 4.2. Copying, distributing, or otherwise using the Applications content without prior written consent from the Developer is prohibited. 5. Chat and User Interaction 5.1. The Application provides a general chat feature for user communication. 5.2. The following are prohibited in the chat: Spam and advertising. Posting content rated 16+. Insults, discrimination, and other unacceptable behavior. 5.3. The Developer reserves the right to moderate the chat and remove messages that violate these Terms. 6. Limitation of Liability 6.1. The Application provides educational materials and programs developed by professional chess players. Improvement in rating is possible only with regular practice and full adherence to the proposed plan. The Developer does not guarantee a 100% increase in rating. 6.2. The Developer is not responsible for user actions in the chat or for content posted by users. 7. Use of Third-Party Services 7.1. The Application utilizes the following third-party services: Supabase: for database management and user authentication. Supabases privacy policy is available at: https://supabase.com/privacy-240804. RevenueCat: for subscription and payment management. RevenueCats privacy policy is available at: https://www.revenuecat.com/privacy/. 7.2. Use of these services involves the transmission of certain data. Details on data processing are available in the respective privacy policies. 8. License for Chess Pieces 8.1. The Application uses chess piece images from the SVG chess pieces category, available at: https://commons.wikimedia.org/wiki/Category:SVG_chess_pieces. 8.2. These images are licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. More information about the license: https://creativecommons.org/licenses/by-sa/3.0/. 9. Changes to the Terms 9.1. The Developer reserves the right to make changes to these Terms. Updated Terms will be available within the Application. 9.2. Continued use of the Application after changes have been made signifies the Users acceptance of the updated Terms. 10. Contact Information 10.1. For any questions related to the use of the Application, Users can contact: info@chessmasterlinks.casa.