Privacy Policy

Last updated: August 2026

1. No Data Collection

EchoFlow is built with a strict 100% client-side architecture. We do not collect, transmit, or store any of your personal data, timetable information, or registration PDFs. All parsing and processing happens locally within your own web browser.

2. Local Storage

To save your timetable customizations (such as custom subject names, theme colors, and hidden slots), EchoFlow uses your browser's native LocalStorage API. This data never leaves your device and remains completely under your control. You can clear this data at any time by clearing your browser data or using the reset options within the app.

3. Analytics & Tracking

We do not use any third-party tracking scripts, analytics tools, or advertising trackers. Your usage of EchoFlow is completely private and anonymous.

4. PDF Processing

When you upload your registration PDF, the file is read and processed entirely on your device using PDF.js. The file is never uploaded to any server.