Please read these Terms of Service ("Terms") carefully before using the Chessie Opening Trainer mobile application and website (collectively, the "Service"). By accessing or using the Service, you agree to be bound by these Terms. If you do not agree to these Terms, you may not access or use the Service.
1. Acceptance of Terms
By creating an account, downloading the application, or otherwise accessing the Service, you acknowledge that you have read, understood, and agree to be bound by these Terms, including any future modifications. These Terms constitute a legally binding agreement between you ("User" or "you") and Chessie Strategic Labs ("we," "our," or "us").
2. Eligibility
By using the Service, you represent and warrant that:
- You are at least 13 years of age (or the age of digital consent in your country of residence).
- You have the full power and authority to enter into this agreement.
- You are not located in a country that is subject to a U.S. government embargo or that has been designated as a "terrorist-supporting" country.
- You are not listed on any U.S. government list of prohibited or restricted parties.
- You will not use the Service for any illegal or unauthorized purpose.
3. Account Registration and Security
To access certain features of the Service, you must create an account. You agree to:
- Provide accurate, current, and complete account information.
- Maintain and promptly update your account information to keep it accurate.
- Maintain the security and confidentiality of your account credentials.
- Notify us immediately of any unauthorized use of your account.
- Accept responsibility for all activities that occur under your account.
We reserve the right to suspend or terminate accounts that violate these Terms or that we reasonably suspect of fraudulent or abusive activity.
4. License and Access
Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to use the Service for personal, non-commercial purposes. This license does not permit you to:
- Copy, modify, distribute, sell, or lease any part of the Service or its content.
- Reverse engineer, decompile, disassemble, or attempt to derive the source code of the application.
- Use the Service for any commercial purpose without our express written consent.
- Interfere with or disrupt the integrity or performance of the Service.
- Attempt to gain unauthorized access to the Service or its related systems or networks.
5. Subscriptions, Billing, and Payments
5.1 Free Tier
The Service is available at no cost with daily usage limits. Free-tier users are limited to 20 training sessions, 20 advanced tool usages, and 20 visualization sessions per day. AI token consumption is capped at 30,000 tokens per month. Usage limits reset daily. Free-tier users may also receive non-personalized advertisements via Google AdMob.
5.2 Premium Subscription
Premium access removes all daily usage quotas, unlocks advanced training modes (Strict Mode, Time Attack), and increases the AI token limit to 100,000 tokens per month. Premium features are subject to the specific plan purchased.
5.3 Billing and Auto-Renewal
All payments are processed through the Google Play Store. Premium subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current billing period. You may manage your subscription and turn off auto-renewal at any time through your Google Play account settings. No refunds are provided for partial billing periods. We reserve the right to change subscription fees with 30 days' notice.
5.4 Cancellation
You may cancel your Premium subscription at any time. Cancellation takes effect at the end of the current billing period. After cancellation, your account reverts to the Free Tier at the start of the next billing period. No pro-rata refunds are provided for the remainder of the billing period.
6. User Content and Intellectual Property
6.1 Ownership
You retain all ownership rights to the chess opening repertoires, move trees, annotations, and study notes you create ("User Content"). We do not claim ownership of your User Content.
6.2 License to Us
By using the Service's cloud synchronization features, you grant us a worldwide, non-exclusive, royalty-free license to store, transmit, and display your User Content solely for the purpose of providing and improving the Service. This license terminates when you delete your account or request removal of your data.
6.3 Acceptable Use
You agree not to upload, store, or share any User Content that:
- Is unlawful, harmful, threatening, abusive, harassing, defamatory, or otherwise objectionable.
- Infringes upon the intellectual property rights of others.
- Contains malicious code, viruses, or any content designed to disrupt the Service.
- Violates any applicable local, state, national, or international law.
We reserve the right to remove any User Content that violates these Terms, without prior notice.
7. AI-Powered Features
The Service provides AI-powered coaching features, including opening analysis, move suggestions, and strategic explanations ("AI Features"). You acknowledge and agree that:
- AI Features are provided for educational and informational purposes only. They do not constitute professional coaching or guaranteed winning strategies.
- AI outputs may contain errors, inaccuracies, or omissions. You should independently verify critical analysis.
- You are solely responsible for decisions made based on AI-generated content.
- Automated or programmatic access to AI Features (e.g., using bots or scripts) is strictly prohibited and may result in immediate suspension.
- Excessive use of AI Features beyond reasonable human-level usage may result in temporary rate limiting or suspension.
8. Acceptable Use and Conduct
You agree to use the Service in accordance with all applicable laws and regulations. Prohibited activities include, but are not limited to:
- Attempting to circumvent or bypass any usage limits, security measures, or access controls.
- Scraping, data mining, or extracting data from the Service through automated means.
- Interfering with or disrupting the Service, servers, or networks connected to the Service.
- Impersonating any person or entity or misrepresenting your affiliation with any person or entity.
- Using the Service to transmit unsolicited communications or spam.
9. Third-Party Services
The Service integrates with third-party platforms including Lichess, Chess.com, Google Firebase, and Google AdMob. We are not responsible for the practices, content, or policies of these third-party services. Your use of these integrations is subject to their respective terms of service and privacy policies. We encourage you to review them before authorizing integration.
10. Termination
We reserve the right to suspend or terminate your access to the Service at any time, without prior notice or liability, for any reason, including but not limited to:
- Breach of these Terms.
- Conduct that we reasonably believe is harmful to the Service, other users, or third parties.
- Extended periods of inactivity.
- Request by law enforcement or government agency.
- Discontinuation or material modification of the Service.
Upon termination, your right to use the Service will immediately cease. Sections 8 through 15 of these Terms shall survive any termination. You may terminate your account at any time through the app settings or by contacting us.
11. Disclaimer of Warranties
THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, WE DISCLAIM ALL WARRANTIES, INCLUDING BUT NOT LIMITED TO:
- IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
- WARRANTIES THAT THE SERVICE WILL BE UNINTERRUPTED, TIMELY, SECURE, OR ERROR-FREE.
- WARRANTIES REGARDING THE ACCURACY, RELIABILITY, OR COMPLETENESS OF ANY CONTENT OR AI OUTPUTS.
NO ADVICE OR INFORMATION, WHETHER ORAL OR WRITTEN, OBTAINED BY YOU FROM US OR THROUGH THE SERVICE SHALL CREATE ANY WARRANTY NOT EXPRESSLY STATED IN THESE TERMS.
12. Limitation of Liability
TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL CHESSIE STRATEGIC LABS, ITS DIRECTORS, EMPLOYEES, PARTNERS, AGENTS, OR SUPPLIERS BE LIABLE FOR ANY:
- INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES.
- LOSS OF PROFITS, DATA, USE, GOODWILL, OR OTHER INTANGIBLE LOSSES.
- DAMAGES RESULTING FROM YOUR ACCESS TO OR USE OF OR INABILITY TO ACCESS OR USE THE SERVICE.
- DAMAGES FOR UNAUTHORIZED ACCESS TO OR ALTERATION OF YOUR TRANSMISSIONS OR DATA.
- DAMAGES ARISING FROM CONDUCT OR CONTENT OF ANY THIRD PARTY ON THE SERVICE.
OUR TOTAL LIABILITY TO YOU FOR ALL CLAIMS ARISING FROM OR RELATING TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE AMOUNT YOU HAVE PAID US, IF ANY, IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE LIABILITY. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF CERTAIN WARRANTIES OR THE LIMITATION OF LIABILITY FOR CERTAIN DAMAGES, SO SOME OF THE ABOVE EXCLUSIONS AND LIMITATIONS MAY NOT APPLY TO YOU.
13. Indemnification
You agree to defend, indemnify, and hold harmless Chessie Strategic Labs, its affiliates, directors, officers, employees, and agents from and against any and all claims, damages, obligations, losses, liabilities, costs, or debts, and expenses (including reasonable attorneys' fees) arising from:
- Your use of and access to the Service.
- Your violation of any term of these Terms.
- Your violation of any third-party right, including without limitation any copyright, property, or privacy right.
- Any claim that your User Content caused damage to a third party.
14. Governing Law and Dispute Resolution
14.1 Governing Law
These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of law provisions. The United Nations Convention on Contracts for the International Sale of Goods does not apply to these Terms.
14.2 Informal Resolution
Before filing any claim, you agree to attempt to resolve any dispute informally by contacting us at support@chessieapp.com. We will attempt to resolve the dispute within 30 days. If the dispute cannot be resolved informally, you agree to the following arbitration provision.
14.3 Arbitration
Any dispute arising from or relating to these Terms shall be resolved by binding arbitration in accordance with the rules of the American Arbitration Association. The arbitration shall be conducted in English in Wilmington, Delaware. Each party shall bear its own costs and attorneys' fees, except as otherwise provided by applicable law. You agree that any arbitration shall be conducted on an individual basis and not as a class, consolidated, or representative action.
14.4 Class Action Waiver
YOU AGREE THAT ANY PROCEEDINGS TO RESOLVE DISPUTES WILL BE CONDUCTED ON AN INDIVIDUAL BASIS AND NOT AS A CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION. YOU WAIVE YOUR RIGHT TO PARTICIPATE IN A CLASS ACTION LAWSUIT OR CLASS-WIDE ARBITRATION.
15. Modifications to the Service or Terms
We reserve the right to modify, suspend, or discontinue the Service (or any part thereof) at any time, with or without notice. We also reserve the right to update or modify these Terms at any time. Material changes will be communicated via email or in-app notification at least 30 days before the effective date. Your continued use of the Service after any modifications indicates your acceptance of the updated Terms. If you do not agree to the modified Terms, you must stop using the Service.
16. Miscellaneous
Entire Agreement: These Terms constitute the entire agreement between you and us regarding the Service and supersede any prior agreements.
Severability: If any provision of these Terms is held to be invalid or unenforceable, the remaining provisions shall continue in full force and effect.
Waiver: Our failure to enforce any right or provision of these Terms shall not be deemed a waiver of such right or provision.
Assignment: You may not assign or transfer these Terms, by operation of law or otherwise, without our prior written consent. We may assign these Terms without restriction.
Force Majeure: We shall not be liable for any failure to perform our obligations hereunder where such failure results from any cause beyond our reasonable control, including acts of God, war, terrorism, civil unrest, or internet outages.
Notices: All notices under these Terms shall be in writing and sent to the email address associated with your account or to support@chessieapp.com.
17. Contact Information
For questions about these Terms, please contact us:
Email: support@chessieapp.com
Legal Inquiries: legal@chessieapp.com
These Terms were last updated on June 1, 2026.