Privacy Policy

1. Introduction

Welcome to Lockcard ("we," "our," or "us"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Chrome Extension and iOS App (collectively, the "Services"). We are committed to protecting your privacy and being transparent about our data practices.

By using our Services, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use our Services.

Age Restriction: Our Services are intended for users who are at least 13 years of age. If you are under 13, please do not use our Services.

2. Information We Collect

2.1 Information You Provide

Account Information: When you create an account, we collect your email address. Account creation is optional; you can use our Services without registering.

Vocabulary Data: We collect the words you save, including:

• Words and phrases you select
• Your custom definitions, example sentences, and notes
• Source URLs where words were encountered
• Context in which words appeared

2.2 Automatically Collected Information

Chrome Extension:

• Selected text and surrounding context from websites you visit
• URLs of pages where you save words
• Browser type and version
• Operating system information
• IP address (collected via Google Analytics)
• Usage statistics (features used, frequency of use)

iOS App:

• Device identifiers (for sync purposes)
• Device type and operating system version
• App usage statistics (collected via Amplitude)
• Push notification tokens (for notification flashcards)
• Widget interaction data
• Learning progress and statistics

Important Note: We do NOT collect:

• Your browsing history
• Text you type on websites (we only read text you actively select)
• Content from websites beyond your selected words and their context
• Cookies for tracking purposes

3. How We Use Your Information

We use the collected information for the following purposes:

• Service Provision: To provide, maintain, and improve our vocabulary learning features
• Synchronization: To sync your vocabulary across Chrome Extension and iOS App (when manually triggered)
• AI Features: To generate personalized AI podcasts using DeepSeek and Microsoft TTS services
• Analytics: To understand usage patterns and improve our Services
• Notifications: To send push notifications for flashcard reviews (iOS App only, with your permission)
• Communication: To respond to your inquiries and provide customer support

4. Data Storage and Security

4.1 Storage Locations

Chrome Extension:

• Data is stored locally in your browser by default
• When you manually sync, data is stored on Minapp Cloud (知晓云) servers located in Asia
• Minapp Cloud is operated by iFanr Technology Co., Ltd. (广州爱范儿科技股份有限公司)

iOS App:

• Data is stored locally on your device using Apple's iCloud
• iCloud storage follows Apple's privacy practices and data location policies

4.2 Security Measures

We implement appropriate technical and organizational measures to protect your data, including:

• Encryption of data in transit using HTTPS/SSL
• Secure authentication mechanisms
• Regular security assessments
• Access controls and monitoring

However, no method of transmission over the Internet or electronic storage is 100% secure. While we strive to protect your information, we cannot guarantee its absolute security.

5. Third-Party Services

We use the following third-party services:

6. Data Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties. We may share your information only in the following circumstances:

• Service Providers: With third-party service providers listed above who assist in operating our Services
• Legal Requirements: When required by law, court order, or government request
• Protection of Rights: To protect our rights, property, safety, or that of our users
• Business Transfers: In connection with a merger, acquisition, or sale of assets

6.1 MCP Integration

The MCP (Model Context Protocol) integration in the iOS App runs locally on your device. It does not transmit your vocabulary data to external services beyond your explicit actions. When you connect MCP-enabled applications, you control what data is shared.

7. Social and Community Features (Optional)

7.1 Available Community Features

We offer optional social features to enhance your learning experience and connect with other vocabulary learners:

• Word Statistics: See how many users have saved a specific word (anonymized count)
• Community Example Sentences: View and share example sentences created by other users
• Learning Connections: Discover other users learning the same words
• Popular Words: Browse trending vocabulary in the community

7.2 What Information May Be Shared

When you opt-in to community features, you may choose to share:

7.3 Privacy Controls

You have granular control over community features through your privacy settings:

• Participate in Statistics: Allow your saved words to be counted in anonymized statistics
• Share Example Sentences: Make your custom sentences visible to other users (per-sentence control)
• Public Profile: Create a public learner profile that others can discover
• Show Word Sources: Display website domains (not full URLs) where you found words

7.4 Default Settings

All community features are disabled by default. Your vocabulary data remains completely private until you explicitly choose to participate in community features. You can:

• Enable or disable features at any time
• Choose which specific content to share
• Withdraw shared content at any time
• Delete all publicly shared data with one click

7.5 Source URL Privacy Protection

Special protection for source URLs:

• Full URLs (with paths, parameters, tokens) are NEVER shared publicly
• Only domain names (e.g., "youtube.com", "wikipedia.org") may be displayed, and only with your permission
• URLs from password-protected sites, intranets, or containing sensitive parameters are automatically excluded
• You can review and edit source visibility for each word individually

7.6 Content Moderation

Shared content (example sentences, definitions) may be moderated to ensure community guidelines are followed. We reserve the right to remove content that is offensive, inappropriate, or violates our Terms of Service.

8. Your Rights and Choices

8.1 Access and Control

• Access: You can access and view your vocabulary data at any time within the Services
• Edit: You can modify or delete individual vocabulary items
• Export: You can export your vocabulary data (Premium feature)
• Sync Control: Synchronization is manual; you decide when to sync your data

8.2 Account Deletion

You can delete your account at any time through the app settings. Upon deletion:

• Your account will be deactivated immediately
• All associated data will be permanently deleted after 90 days
• If you log in within the 90-day grace period, the deletion will be canceled
• Local data in your browser or device remains until you manually clear it

8.3 Regional Rights

EU Users (GDPR Rights):

• Right to access your personal data
• Right to rectification of inaccurate data
• Right to erasure ("right to be forgotten")
• Right to data portability
• Right to object to processing
• Right to withdraw consent

California Users (CCPA Rights):

• Right to know what personal information is collected
• Right to know if personal information is sold or disclosed
• Right to say no to the sale of personal information (we do not sell data)
• Right to access your personal information
• Right to equal service and price

To exercise any of these rights, please contact us at bravetsia@gmail.com.

9. Data Retention

• Active Accounts: We retain your data as long as your account is active
• Inactive Accounts: We do not automatically delete inactive accounts; your data is preserved
• Deleted Accounts: Data is permanently deleted 90 days after account deletion (unless you log in again)
• Analytics Data: Anonymized analytics data may be retained indefinitely for service improvement

10. Children's Privacy

Our Services are not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us at bravetsia@gmail.com, and we will delete such information.

11. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have different data protection laws. By using our Services, you consent to the transfer of your information to:

• Asia (Minapp Cloud servers)
• United States (Google Analytics, Amplitude, Microsoft TTS)
• Other regions where our service providers operate

12. Changes to This Privacy Policy

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

• Posting the new Privacy Policy on this page
• Updating the "Last Updated" date
• Sending you an email notification (if you have an account)

Your continued use of the Services after changes are posted constitutes your acceptance of the updated policy.

13. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us:

14. Platform-Specific Information

14.1 Chrome Extension Permissions

Our Chrome Extension requests the following permissions:

• storage: To save your vocabulary data locally in your browser
• tts (Text-to-Speech): To provide pronunciation audio for words
• Content Scripts on all websites: To enable word selection and lookup on any webpage you visit

We only access content that you explicitly select. We do not read or collect any other content from the webpages you visit.

14.2 iOS App Permissions

Our iOS App may request the following permissions:

• Notifications: To send flashcard reminders and learning prompts
• iCloud: To store your vocabulary data in your personal iCloud account