Terms of Use

1. Agreement to Terms

Welcome to JamKham (จำคำ). These Terms of Use ("Terms") constitute a legally binding agreement between you and JamKham ("we," "us," or "our") governing your access to and use of the JamKham website, mobile application, and related services (collectively, the "Service").

By accessing or using the Service, you acknowledge that you have read, understood, and agree to be bound by these Terms. If you do not agree to these Terms, you must not access or use the Service.

2. Eligibility

You must be at least 13 years old to use the Service. If you are under 16 years old and reside in the European Union, you must have parental or guardian consent to use the Service.

By using the Service, you represent and warrant that you meet these age requirements and have the legal capacity to enter into these Terms.

3. Description of Service

JamKham is a Thai language learning platform that provides:

• Vocabulary extraction from user-uploaded PDF documents using AI/LLM technology
• Spaced repetition flashcard training with multiple learning modes
• Audio pronunciation support for Thai vocabulary
• Progress tracking and learning analytics
• Tone training, classifier drills, and other Thai-specific learning features

We reserve the right to modify, suspend, or discontinue any aspect of the Service at any time without prior notice.

4. Account Registration

To access certain features of the Service, you must create an account. You agree to:

• Provide accurate, current, and complete registration information
• Maintain the security of your account password
• Accept responsibility for all activities that occur under your account
• Notify us immediately of any unauthorized access or security breach
• Use a valid, non-disposable email address for account communications

We reserve the right to suspend or terminate accounts that use disposable email addresses, provide false information, or violate these Terms.

5. Acceptable Use

You may use the Service only for lawful purposes and personal language learning. You agree to use the Service in accordance with these Terms and all applicable laws and regulations.

6. Prohibited Uses

You agree NOT to:

• Use the Service for any commercial purpose without our prior written consent
• Access the Service through automated means (bots, scrapers, scripts) except as explicitly permitted
• Reverse engineer, decompile, or attempt to extract source code from the Service
• Interfere with or disrupt the Service or servers/networks connected to the Service
• Attempt to gain unauthorized access to any portion of the Service or other user accounts
• Use the Service to transmit viruses, malware, or other harmful code
• Impersonate any person or entity or falsely state your affiliation with any person or entity
• Collect or harvest personal information of other users
• Use the Service in any manner that could damage, disable, overburden, or impair our systems
• Share, resell, or redistribute content or features from the Service without permission

7. Prohibited Content

When uploading PDFs or other content to the Service, you agree NOT to upload material that:

• Infringes copyright, trademark, or other intellectual property rights of third parties
• Contains explicit sexual content, pornography, or adult material
• Promotes hate speech, discrimination, or violence against individuals or groups
• Contains political propaganda or campaign materials
• Includes personally identifiable information (PII) of other individuals without consent
• Contains malware, viruses, or other harmful code
• Violates any applicable law or regulation
• Is defamatory, libelous, or fraudulent

We reserve the right to review, remove, or refuse any content at our sole discretion without prior notice. Violation of this policy may result in immediate account termination.

8. Subscriptions and Payments

JamKham offers subscription-based access to premium features:

• Free Tier: Limited access with basic features
• Scholar Tier: Full access to all learning features
• Master Tier: Premium features including priority support

Payment Processing: All payments are processed securely through Stripe. By subscribing, you authorize us to charge your payment method for the subscription fees.

Billing: Subscriptions are billed on a recurring basis (monthly or annually) until canceled. You will be charged at the beginning of each billing period.

Cancellation: You may cancel your subscription at any time through your account settings. Cancellation takes effect at the end of your current billing period.

Refunds: We do not offer refunds for partial months or unused portions of your subscription, except as required by law or at our sole discretion.

Price Changes: We reserve the right to change subscription prices with 30 days' notice to existing subscribers.

9. Account Suspension and Termination

We reserve the right to suspend or terminate your account and access to the Service at any time, with or without notice, for:

• Violation of these Terms
• Uploading prohibited content
• Engaging in fraudulent or illegal activity
• Multiple failed login attempts or suspicious account activity
• Non-payment of subscription fees
• Any conduct that we deem harmful to the Service or other users

No Refunds for Violations: If your account is terminated for violation of these Terms, you will not receive a refund for any unused subscription period.

You may terminate your account at any time by contacting us or using the account deletion feature in your account settings.

10. Intellectual Property Rights

Our Content: The Service, including all software, text, graphics, logos, audio, and user interface, is owned by JamKham and protected by copyright, trademark, and other intellectual property laws. You may not copy, modify, distribute, or create derivative works without our written permission.

Your Content: You retain ownership of content you upload to the Service (PDFs, personal notes, etc.). By uploading content, you grant us a limited, non-exclusive license to process, store, and display your content solely for the purpose of providing the Service to you.

LLM-Generated Content: Vocabulary extractions and other content generated by our AI/LLM systems are provided to you for your personal use. You are responsible for ensuring your uploaded PDFs do not infringe third-party copyrights.

11. Disclaimers

No Guarantee of Learning Outcomes: While we design our Service based on research-backed pedagogical principles, we make no guarantee that you will achieve specific language learning outcomes or fluency levels.

LLM/AI Accuracy: Our Service uses AI/LLM technology to extract vocabulary from PDFs. While we strive for accuracy, AI-generated content may contain errors, omissions, or inaccuracies. You should independently verify vocabulary definitions and translations.

Service Availability: We do not guarantee that the Service will be uninterrupted, timely, secure, or error-free. We may experience downtime for maintenance, updates, or technical issues.

Third-Party Content: We are not responsible for the accuracy, legality, or appropriateness of content you upload or content provided by third-party services.

12. Limitation of Liability

This includes, but is not limited to:

• Loss of profits, data, use, or goodwill
• Service interruptions or downtime
• Errors or inaccuracies in AI-generated content
• Unauthorized access to your account or content
• Any conduct or content of third parties

Maximum Liability: In no event shall our total liability to you for all damages exceed the amount you paid to us in the 12 months preceding the claim, or $100 USD, whichever is less.

13. Indemnification

You agree to indemnify, defend, and hold harmless JamKham and its officers, directors, employees, and agents from any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising out of or relating to:

• Your use of the Service
• Your violation of these Terms
• Content you upload to the Service
• Your violation of any rights of third parties, including copyright infringement

14. Third-Party Services

Our Service integrates with and relies on third-party services, including:

• Stripe: Payment processing for subscriptions
• OpenAI/Anthropic: AI/LLM services for vocabulary extraction
• Google Cloud Text-to-Speech: Audio pronunciation generation
• Maileroo: Email delivery service
• Cloudflare Turnstile: CAPTCHA and bot protection

Your use of these third-party services is subject to their respective terms of service and privacy policies. We are not responsible for the practices or performance of these third-party services.

15. Modifications to Terms

We reserve the right to modify these Terms at any time. We will provide notice of material changes by:

• Posting the updated Terms on our website
• Sending an email to your registered email address
• Displaying a prominent notice within the Service

Material changes will take effect 30 days after notice is provided. Your continued use of the Service after the effective date constitutes acceptance of the modified Terms.

If you do not agree to the modified Terms, you must stop using the Service and may cancel your subscription.

16. Governing Law and Dispute Resolution

These Terms shall be governed by and construed in accordance with the laws of the jurisdiction in which JamKham operates, without regard to conflict of law principles.

Any disputes arising out of or relating to these Terms or the Service shall be resolved through binding arbitration in accordance with applicable arbitration rules, except that either party may seek injunctive relief in court for intellectual property violations.

If you are a consumer in the European Union, you may also have the right to pursue disputes through the EU Online Dispute Resolution platform.

17. Contact Information

If you have questions about these Terms or the Service, please contact us: