Privacy Policy for RS3 Market Data Explorer

1. Introduction

Welcome to RS3 Market Data Explorer ("we," "our," or "us"). We are committed to protecting your privacy and being transparent about how we collect, use, and safeguard your information when you use our web application.

This Privacy Policy explains:

• What information we collect
• How we use that information
• How we protect your data
• Your rights regarding your personal information
• How to contact us with privacy concerns

2. Information We Collect

2.1 Information You Provide Directly

Trade Data (Local Storage): When you use the profit tracking features, we store locally:

• Item names you trade
• Trade types (buy/sell)
• Quantities traded
• Prices per item
• Total trade values
• Trade dates and timestamps
• Calculated profits/losses

User Settings (Local Storage): We store your preferences locally including:

• Default trade quantities
• Default prices
• Default trade types
• Auto-fill preferences
• Notification settings
• Keyboard shortcut preferences
• Chart display settings

Search History (Local Storage): We store locally:

• Recent search queries (last 10 searches)
• Search filters and parameters used

Google Drive Tokens (Local Storage): If you use Google Drive integration:

• OAuth authentication tokens (stored locally)
• File metadata for saved trading data

2.2 Information Collected Automatically

Google Analytics Data (Transmitted to Google): We use Google Analytics 4 (GA4) to collect:

• Page views and navigation patterns
• Search queries and results counts
• Item view interactions
• Tab switching behavior
• Export actions (format and item count)
• Filter usage patterns
• Sorting preferences
• Pagination interactions
• Session duration and engagement
• Browser type and version
• Device information (screen resolution, viewport size)
• Geographic location (country/region level)
• IP address (anonymized)

Technical Information (May be transmitted):

• Browser type and version
• Operating system
• Device type (desktop, mobile, tablet)
• Screen resolution and viewport size
• Language preferences
• Time zone

2.3 Google Drive Integration Data

If you choose to use Google Drive integration:

• File content when importing/exporting data (transmitted to Google)
• File metadata for saved trading data (transmitted to Google)

3. How We Use Your Information

3.1 Local Data Processing (On Your Device)

• Trade Data: Processed locally to calculate profits, track performance, and manage your trade history
• Settings: Applied locally to customize your experience and preferences
• Search History: Used locally to provide recent search suggestions
• Data Export/Import: Handled locally for backup and restore functionality

3.2 Analytics Data (Transmitted to Google)

• Analyze website usage patterns to improve functionality
• Optimize website performance and user experience
• Understand which features are most popular
• Measure application performance and loading times

3.3 Google Drive Integration (Transmitted to Google)

• Store and retrieve your trading data backup files
• Enable cross-device synchronization of your data
• Provide secure cloud storage for your trading records

4. Data Storage and Security

4.1 Local Storage (Your Device Only)

The majority of your data is stored locally in your browser and never leaves your device:

• localStorage: For trade data, settings, and search history
• Session storage: For temporary session data

This data remains on your device and is never transmitted to our servers.

4.2 Google Analytics (Transmitted to Google)

Analytics data is transmitted to Google Analytics servers and processed according to Google's Privacy Policy. We have configured our analytics to:

• Anonymize IP addresses
• Respect "Do Not Track" browser settings
• Disable advertising features
• Use secure, encrypted connections

4.3 Google Drive Integration (Transmitted to Google)

When using Google Drive features:

• Authentication tokens are stored locally in your browser
• File operations are performed directly through Google's API
• File content is transmitted to Google when you save/load files
• We do not store your Google Drive credentials on our servers

5. Data Retention

5.1 Local Data

• Trade Data: Stored indefinitely until you delete it
• Settings: Stored indefinitely until you reset them
• Search History: Limited to last 10 searches
• Google Drive Tokens: Stored until you disconnect or they expire

5.2 Analytics Data

• Google Analytics data retention is controlled by Google's policies
• We do not have direct control over Google's data retention periods
• You can request data deletion through Google Analytics

6. Data Sharing and Disclosure

6.1 We Do Not Sell Your Data

We do not sell, rent, or trade your personal information to third parties.

6.2 Limited Sharing

We may share information only in these limited circumstances:

• Google Analytics: As described in Section 4.2
• Google Drive: When you use Google Drive integration features
• Legal Requirements: If required by law or to protect our rights
• Service Providers: With trusted third-party services that help us operate our application (e.g., hosting providers)

6.3 Aggregate Data

We may share aggregated, anonymized data that does not identify individual users for research or statistical purposes.

7. Your Rights and Choices

7.1 Access and Control Your Data

You can:

• View and edit your trade data through the application interface
• Delete individual trades or clear all trade data
• Export your data in JSON or CSV format
• Reset your settings to defaults
• Clear your search history

7.2 Analytics Opt-Out

You can opt out of Google Analytics tracking by:

• Using browser extensions that block analytics
• Enabling "Do Not Track" in your browser settings
• Using private/incognito browsing modes
• Contacting us to disable analytics for your usage

7.3 Google Drive Integration

You can:

• Disconnect Google Drive integration at any time
• Revoke access through your Google Account settings
• Delete files you've saved to Google Drive

7.4 Data Deletion

To delete your data:

• Local Data: Use the application's data management features
• Analytics Data: Contact Google Analytics support
• Google Drive Data: Delete files through Google Drive interface

8. Children's Privacy

Our application is not intended for children under 13 years of age. 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.

9. International Data Transfers

Your data may be processed in countries other than your own. When we transfer data internationally, we ensure appropriate safeguards are in place to protect your information.

10. 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 updated policy on our website
• Updating the "Last Updated" date
• Providing notice through the application if significant changes occur

12. Legal Basis for Processing (EU Users)

If you are located in the European Union, our legal basis for processing your personal information is:

• Consent: For analytics and optional features
• Legitimate Interest: For providing and improving our services
• Contract: For fulfilling our service obligations

13. California Privacy Rights (CCPA)

If you are a California resident, you have the right to:

• Know what personal information we collect
• Know whether we sell or disclose your personal information
• Say no to the sale of personal information
• Access your personal information
• Equal service and price (non-discrimination)

14. Data Protection Officer

For EU users, you may contact our Data Protection Officer at:
Email: [DPO Email Address]

15. Complaints

If you have concerns about our data practices, you may:

1. Contact us directly to resolve the issue
2. File a complaint with your local data protection authority
3. For EU users: Contact the European Data Protection Board