Privacy Policy

Introduction

Welcome to Kaiwa. We respect your privacy and are committed to protecting your personal data. This Privacy Policy explains how we collect, use, and safeguard your information when you use our service.

By using Kaiwa, you agree to the collection and use of information in accordance with this policy.

Information We Collect

Personal Information

• Email Address: Collected when you create an account
• Account Information: Username, authentication credentials (managed by Clerk)
• Payment Information: Billing details for subscription plans (processed securely through Clerk)

Files and Content

• Subtitle Files: Japanese subtitle (.srt) files you upload to generate Anki flashcards
• Generated Anki Decks: The flashcard decks created from your subtitle files
• Usage Data: Information about how you use our service

Automatically Collected Information

• Log Data: IP address, browser type, device information, and access times
• Cookies: Essential cookies for authentication and service functionality

How We Use Your Information

We use your information to:

• Provide and maintain our service
• Process your subtitle files and generate Anki flashcards
• Manage your account and subscription
• Send service-related communications
• Improve our service and develop new features
• Ensure security and prevent fraud
• Comply with legal obligations

We do not:

• Sell your personal data to third parties
• Use your data for marketing purposes without explicit consent
• Share your subtitle files or generated content with others

Third-Party Services

We use the following trusted third-party services:

Authentication and Billing

Clerk: Handles user authentication and payment processing.Clerk Privacy Policy

Data Storage and Hosting

• Convex: Stores your account data and uploaded files.Convex Privacy Policy
• Vercel: Hosts our web application.Vercel Privacy Policy

AI and Translation

Google Gemini API: Processes subtitle text for translations and enrichment

Open Source Tools

• JMdict: Japanese dictionary data (processed locally, no data sharing)
• SudachiPy: Japanese text tokenization (processed locally, no data sharing)

Data Retention

• Active Accounts: Your files and data are retained while your account is active
• Uploaded Files: Subtitle files and generated Anki decks are stored for at least 30 days
• Inactive Accounts: We may delete data from inactive accounts after providing notice
• Account Deletion: Personal data removed within 30 days of account deletion

Data Security

We implement industry-standard security measures to protect your data:

• Encrypted data transmission (HTTPS/SSL)
• Secure authentication through Clerk
• Regular security updates and monitoring
• Limited employee access to personal data

However, no method of transmission over the internet is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.

Your Rights

Depending on your location, you may have the following rights:

• Access: Request a copy of your personal data
• Correction: Update or correct your information
• Deletion: Request deletion of your account and data
• Data Portability: Receive your data in a machine-readable format
• Opt-Out: Unsubscribe from marketing communications
• Objection: Object to certain data processing activities

To exercise these rights, contact us at: support@kaiwa.us.com

Children's Privacy

Our service is not intended for users under 18 years of age. We do not knowingly collect personal information from children under 18. If you are a parent or guardian and believe your child has provided us with personal data, please contact us, and we will delete such information.

International Data Transfers

Kaiwa is operated from Mexico. If you access our service from outside Mexico, your data may be transferred to and stored in Mexico or other countries where our service providers operate. By using our service, you consent to this transfer.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by:

• Posting the new policy on this page
• Updating the "Last Updated" date
• Sending an email notification for material changes

Your continued use of Kaiwa after changes constitutes acceptance of the updated policy.

Contact Us

If you have questions about this Privacy Policy or wish to exercise your privacy rights, contact us:

Email: support@kaiwa.us.com

Response Time: We typically respond within 24-48 hours