Last updated: August 2026

Japanese System is designed with a privacy-first and local-first approach.

Information Collection

Japanese System does not collect, sell, or transmit personal data to external servers.

The extension stores study-related data locally inside your browser in order to provide tracking and analytics features.

This may include:

• Study session durations
• Tracked website hostnames
• Custom study categories
• User-defined tracked sites
• Local analytics and statistics
• Extension preferences and settings

All data is stored locally using Chrome extension storage APIs.

Website Access

Japanese System requires access to website URLs in order to detect supported Japanese learning and immersion websites and provide automatic study tracking.

The extension does not read personal content such as:

• passwords
• messages
• form inputs
• payment information