Terms & Conditions

Introduction

This Service is operated by an independent developer preparing to register a company within the European Union. Throughout these Terms, "we", "us", or "our" refers to the operator of the Service.

These Terms apply from the moment you access or use the Service in any way. By using Lina - Language Learning Companion ("the Service"), you agree to be bound by these Terms & Conditions. If you do not agree, please discontinue use immediately.

The Privacy Policy is incorporated into these Terms by reference and forms part of your agreement with us. Please read it carefully.

Service Description

• Free Trial: New users receive a 5-minute free trial to experience the language learning service.
• Paid Sessions: After the trial, continued access requires payment for individual sessions or session packages.
• AI-Powered Learning: The service uses artificial intelligence to provide personalized language learning support and conversation practice.
• Session Management: Paid sessions can be accessed and recovered across devices using secure authentication methods including magic links and biometric authentication (passkeys).

Payment Terms

• Pricing: Individual sessions are $10 for 30 minutes; 8-session packages are $70 (8 sessions for the price of 7).
• Payment Processing: All payments are securely processed through Stripe, Inc.
• No Refunds: All sales are final. Sessions begin immediately upon purchase and cannot be refunded.
• Package Credits: Session packages provide 8 credits that can be used for individual 30-minute sessions. Credits expire 1 year after purchase.
• Payment Methods: You may optionally save payment methods with Stripe for future convenience.
• Session Access: Access to paid sessions can be securely recovered across devices and browsers using privacy-first authentication methods. Trial usage remains device-specific for privacy protection.

Privacy & Data Handling

• No Account Required: You can use the service without creating an account or providing personal information.
• Conversations: All conversations are processed in real-time and are not stored or retained by the service after your session ends.
• AI Training & Data Retention: Your conversations are not used to train OpenAI's models and are only retained temporarily by OpenAI (up to 30 days) for abuse monitoring purposes, in accordance with OpenAI's data usage policy.
• Secure Authentication: Session access and trial status are managed using privacy-first methods that protect your identity while enabling secure access recovery across devices when applicable.
• Privacy Policy: By using the service, you also agree to our Privacy Policy, which is hereby incorporated into these Terms & Conditions by reference.

Intended Use & Educational Disclaimer

• Language Learning Only: This service provides language learning support, conversation practice, and educational guidance only.
• Not Professional Tutoring: The service is not a substitute for professional language tutoring, formal education, or certified language instruction.
• No Professional Relationship: Using the service does not establish a professional relationship of any kind (tutoring, educational, or instructional) between you and the creators or providers of this service.
• Supplemental Learning Only: Lina is designed to complement—not replace—human instruction, professional tutoring, or formal language education. Always seek professional help when needed.
• No Educational Advice: AI responses do not constitute educational advice, language certification, or formal instruction.
• Critical Learning: For formal language certification or academic requirements, please consult with licensed educators or certified language instructors.
• Professional Consultation: For ongoing language learning concerns, please consult with licensed educators, tutors, or language learning professionals.

Acceptable Use

• Appropriate Use: Use the service only for its intended purpose of language learning support and practice.
• Prohibited Activities: Do not use the service for illegal activities, harassment, abuse, or any harmful purposes.
• Respectful Interaction: Maintain respectful communication and do not attempt to exploit or misuse the AI system.
• No Sharing: Do not share session tokens, accounts, or attempt to circumvent any authentication or access-control measures.

Service Availability

• Best Effort: We strive to maintain consistent service availability but cannot guarantee 100% uptime.
• Maintenance: The service may be temporarily unavailable for maintenance or technical improvements.
• Session Limits: Individual sessions have time limits (30 minutes for single purchases, variable for packages).
• Technical Requirements: You are responsible for maintaining compatible devices and internet connectivity.

AI License and Restrictions

You are granted a limited, non-transferable, non-exclusive license to use the Service for personal, non-commercial purposes. You may not copy, extract, modify, reverse-engineer, or redistribute any part of the Service or its underlying AI systems, prompts, or logic.

Intellectual Property

• Service Ownership: The service, including all software, content, and technology, is our proprietary property.
• Limited License: You receive a limited, non-exclusive license to use the service for personal use only.
• Conversation Ownership: While conversations are not stored, you retain ownership and responsibility of your input during sessions.

Limitation of Liability

• No Warranties: The service is provided "as is" without warranties of any kind.
• Limited Liability: Our liability is limited to the amount you paid for the service in the past 30 days.
• User Responsibility: You use the service at your own risk and discretion.
• Third-Party Services: We are not responsible for issues with third-party services (Stripe, OpenAI, hosting providers, internet providers, etc.).

Termination

• User Termination: You may stop using the service at any time by closing your browser or clearing local data.
• Service Termination: We reserve the right to terminate access for violations of these terms.
• Effect of Termination: Upon termination, your access ends immediately with no refund of unused sessions.

Changes to Terms

• Updates: These terms may be updated periodically to reflect service changes or legal requirements.
• Notification: Material changes will be posted on this page with an updated date.
• Continued Use: Your continued use of the service after changes constitutes acceptance of updated terms.

Security & Misuse

• No Manipulation: Do not attempt to bypass, alter, or interfere with the companion's behavior, safety instructions, or internal logic.
• Appropriate Content: Do not use the service for generating inappropriate, harmful, or illegal content.
• System Integrity: Do not attempt to hack, exploit, or compromise the service's security or functionality.

Age Requirements

You must be at least 13 years old to use the Service, or 16 if you are located in the European Union, unless you have verified parental or guardian consent. By using the Service, you confirm that you meet the applicable age requirements. You are responsible for complying with your local laws and regulations.

Governing Law

These Terms are governed by the laws of the European Union and the applicable jurisdiction where the Service is operated. Disputes shall be resolved under the governing law of the jurisdiction chosen upon formal business registration.

Dispute Resolution

Any dispute or claim relating to these Terms shall be resolved through individual arbitration or mediation under the applicable EU jurisdiction. You agree to waive any right to participate in class action or collective proceedings. All legal actions must be brought exclusively in the courts of the jurisdiction chosen upon formal business registration.

Indemnification

You agree to indemnify and hold harmless the creators and operators of the Service from any claims, liabilities, damages, losses, or legal fees resulting from your use of the Service, violation of these Terms, or infringement of any third-party rights.

Service Modifications

We reserve the right to modify, suspend, or discontinue any part of the Service at any time without prior notice. We are not liable for any loss or inconvenience caused by such changes.

Third-Party Services

We currently rely on external services such as Stripe, OpenAI, Gmail, and Render to operate the Service. These providers manage their own privacy and legal policies, which you can review separately.

Entire Agreement and Severability

These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the Service. If any part of these Terms is found to be invalid or unenforceable, the remaining provisions will remain in full force and effect.

Accessibility

We aim to make Lina accessible to all users. If you encounter any accessibility issues, please contact us so we can assist.

Contact Information

If you have questions, concerns, or need support regarding these terms or the service, please use our contact form.

Agreement to Terms

By accessing, browsing, or using this service in any way, you acknowledge that you have read, understood, and agree to be bound by these Terms & Conditions and our Privacy Policy. If you do not agree to these terms, please discontinue use of the service immediately.

Last Updated: September 7, 2025