Terms of Service

1. Acceptance of Terms

Welcome to DejaVocab! By using our services, you agree to the following terms. If you do not agree to these terms, please do not use our services.

DejaVocab is an intelligent multimedia learning assistant that helps users learn languages through videos, podcasts, documents, and other content. We provide subtitle extraction, AI translation, phrase learning, grammar analysis, EPUB reader, and other features. You can use our services through our website, iOS app, Android app, or Chrome extension.

2. User Account

To use DejaVocab services, you must comply with the following account rules:

• Age Requirement: You must be at least 13 years old to use this service
• Account Security: You are responsible for protecting your account security and password confidentiality
• Information Accuracy: You agree to provide accurate and complete registration information
• Account Ownership: You may not transfer your account to others
• Anomaly Reporting: Please notify us immediately if you discover unauthorized use

3. Subscription Services

DejaVocab offers the following subscription plans:

Free Tier

• Basic feature access
• 50 credits per month
• Video subtitle extraction and translation
• Basic vocabulary learning

Premium

• 500 credits per month
• All premium features
• Deja Memory feature (phrase learning)
• Podcast subtitle generation
• EPUB/PDF document reading
• AI grammar analysis
• Monthly or yearly billing options

Ultra

• 1000 credits per month
• All ultra features
• Local video/audio import
• Quick transcription feature
• Priority support
• Monthly or yearly billing options

Co-Builder (Lifetime)

• Permanent access
• Credits accumulate monthly (Premium +500/month, Ultra +1000/month)
• Exclusive lifetime member number (e.g., #0001)
• Priority access to new features
• All Ultra features

4. Payment and Refunds

• Payment Channels: Subscription fees are processed through Google Play or Apple App Store
• Auto-Renewal: Subscriptions will auto-renew unless cancelled before the end of the current period
• Refund Policy: Refund policies follow the respective app store regulations
• Lifetime Membership: Lifetime membership is a one-time purchase and is non-refundable
• Price Differences: Prices may vary by region

5. Content Usage

• Content Ownership: You retain ownership of learning content created through the service (words, sentences, phrases, notes, etc.)
• Personal Use: Video subtitles, podcast transcriptions, and translations are for personal learning use only
• No Commercial Use: Commercial use or content distribution is prohibited
• Third-Party Content: We are not responsible for the accuracy of third-party videos, podcasts, or document content
• Copyright Compliance: Users must comply with relevant copyright laws
• Local Files: Local videos/audio/documents you import must be content you have the right to use

6. Prohibited Actions

When using this service, you agree not to:

• Violate any laws or regulations
• Infringe on others' intellectual property rights
• Distribute malware or harmful content
• Attempt unauthorized access to systems
• Abuse APIs or automation tools
• Interfere with normal service operation
• Create fake or fraudulent accounts
• Share, resell, or transfer your subscription

7. Service Changes

We reserve the following rights:

• Service Adjustment: Modify or terminate any part of the service
• Terms Update: Update these terms (major changes will be notified in advance)
• Price Adjustment: Adjust pricing (does not affect existing subscription periods)
• Account Handling: Restrict or terminate access for violating accounts

8. Disclaimer

• The service is provided "as is" without any express or implied warranties
• We do not guarantee uninterrupted or error-free service
• We are not liable for any damages arising from use of the service
• AI translation, grammar analysis, and phrase extraction may contain errors and are for reference only
• Subtitle transcription accuracy is affected by audio quality and language complexity
• You assume all risks associated with using this service

9. Intellectual Property

• Our Rights: DejaVocab's name, logo, software, and all related content are our intellectual property
• Your Rights: You retain ownership of learning content you create
• License Grant: We grant you a limited, non-exclusive, non-transferable license to use our services
• Prohibited: Unauthorized copying, modification, distribution, or reverse engineering of our software is prohibited

10. Privacy Protection

Your privacy is important to us. For information on how we collect, use, and protect your information, please see our Privacy Policy.

We commit to:

• Not selling your personal data
• Using industry-standard security measures
• Only collecting data when necessary

11. Dispute Resolution

• Applicable Law: These terms are governed by the laws of the People's Republic of China
• Dispute Resolution: Any disputes shall first be resolved through friendly negotiation
• Arbitration: If negotiation fails, disputes shall be submitted to the competent People's Court

12. Contact Us

If you have any questions or comments about these Terms of Service, please contact us through: