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Privacy Policy

Last updated: October 1, 2025

1. Introduction

Welcome to FET Timetable Explorer ("we," "our," or "the application"). This privacy policy explains how we collect, use, and protect your information when you use our web application at fetviewer.com.

FET Timetable Explorer is a client-side web application designed to help you visualize, filter, and manage timetables generated by FET (Free Timetabling Software). We are committed to protecting your privacy and being transparent about our data practices.

2. Information We Collect

2.1 Data You Provide and Server Storage

When you use FET Timetable Explorer, you may upload timetable data files (CSV format) containing:

• Subject names
• Teacher names
• Room assignments
• Student group information
• Time slots and schedules
• Activity tags and comments

Your timetable data is initially processed entirely in your browser. **However, when you use specific server-based features (e.g., 'Save to Cloud' or 'Share Link'), this timetable data is transmitted to and stored on our secure servers.**

2.2 Automatically Collected Information and Mandatory Third-Party Services

By using FET Timetable Explorer, you agree to the mandatory use of third-party cookies for analytics and service improvement. These services are essential for us to understand user behavior and continuously improve the application's functionality and performance. We use:

• Google Analytics: Collects anonymized information about your application usage.
• Microsoft Clarity: Collects anonymized usage data, including heatmaps and session recordings, to identify usability issues.

The information collected by these services includes:

• Pages visited within the application and features used (e.g., filters applied).
• Time spent and interaction patterns within the application.
• Browser type, device type, and general location (country/region level only).

This collection is **mandatory for the effective operation and continuous improvement of the application.**

2.3 Local Storage

We use your browser's local storage to save:

• **Temporary cached timetable data** (for quick re-loading).
• Display preferences and filter settings.
• Dismissed notifications and your consent choices for this privacy policy.

This data remains on your device and can be cleared at any time using your browser's settings or the "Reset All Data" button in the application.

3. How We Use Your Information

3.1 Timetable Data (Local and Server Use)

Your timetable data is used exclusively for:

• Displaying your schedule, filtering, searching, and detecting conflicts. (Processed in your browser)
• **Saving your timetable for later retrieval or sharing with others, when you elect to use a server-based feature.** (Stored on our secure servers)

When you opt to save your timetable, the data is stored only to provide that chosen functionality.

3.2 Analytics Data

We use the mandatory analytics data collected via Google Analytics and Microsoft Clarity to:

• Identify and fix bugs and technical issues.
• Analyze feature usage to **prioritize development and enhance user experience.**
• Improve the application's stability and performance.

4. Data Sharing and Third Parties

4.1 Third-Party Analytics Providers

We share anonymized usage statistics with Google Analytics and Microsoft Clarity. Their use of this data is governed by their respective privacy policies:

• Google: https://policies.google.com/privacy
• Microsoft: https://privacy.microsoft.com/en-us/privacystatement

4.2 No Sale of Data and No Account System

We do not sell, rent, or trade your information. FET Timetable Explorer does not require user accounts, passwords, or personal identification. Timetable data stored on our server is associated with an anonymous identifier or a unique shareable key/link, **not your personal identity.**

5. Data Security

We implement security measures to protect your data:

• **Client-side processing:** Most timetable data processing happens solely in your browser.
• **Server Security:** Timetable data uploaded for saving or sharing is **stored on secure servers and transmitted using HTTPS encryption.**
• Anonymity: We do not associate your timetable data with personal identifiers.

You are responsible for keeping your device and browser secure.

6. Your Rights and Choices

6.1 Cookie Acceptance (Mandatory)

**Acceptance of analytics cookies and other essential third-party services is mandatory for using FET Timetable Explorer.** If you do not agree to the placement of these cookies, you must discontinue using the application.

6.2 Data Deletion

You can delete your data at any time:

• Use the "Reset All Data" button in the application to clear all locally stored data.
• **For server-stored data, you can delete your timetable permanently using the deletion feature associated with your saved/shared link. Server-stored data is retained for a maximum of 90 days if not actively accessed or deleted.**
• Clear your browser's local storage and cookies manually.

7. Children's Privacy

FET Timetable Explorer is designed for use by educational institutions and their staff. We do not knowingly collect information from children under 13.

8. International Data Transfers

**Timetable data that you save to the server may be processed or stored in a location outside of your home country (e.g., in the European Union or the United States).** We take appropriate measures to ensure your data is protected according to the standards of this Privacy Policy. Anonymized analytics data is also subject to the international transfer policies of Google and Microsoft.

9. Changes to This Privacy Policy

We may update this privacy policy from time to time. When we make significant changes, we will update the "Last updated" date at the top of this page and may display a notification in the application.

10. Contact Information

If you have questions or concerns about this privacy policy or our data practices, please contact us:

• Contact us through the feedback form at **fetviewer.com**
• Send inquiries to the site administrator (You should replace this with a dedicated email address like **privacy@[yourdomain].com**)

12. Legal Basis for Processing (GDPR)

If you are located in the European Economic Area (EEA), our legal basis for processing your information is:

• **Legitimate interest:** For mandatory usage monitoring, security, and continuous improvement necessary to ensure the ongoing development and viability of the application.
• **Contractual necessity:** For providing the core timetable visualization service and fulfilling your request to save/share your timetable via our servers.

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