Privacy Policy

Last updated: April 2026

What data we collect

Master Nihongo does not require an account. We do not collect personal information such as your name or email address. Your study progress and preferences (like theme choice) are stored locally in your browser using localStorage and are never sent to our servers.

AI-powered exercises

Our daily exercises are pre-generated using AI and served as static content. No user data is sent to any AI service during your study sessions.

Cookies and advertising

We use Google AdSense to display advertisements. Google may use cookies and similar technologies to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising by visiting Google Ads Settings.

For more information about how Google uses data, see How Google uses data when you use our partners' sites.

Analytics

We may use Cloudflare Web Analytics, which does not use cookies or track personal data. It collects aggregated, anonymous page-view metrics only.

Third-party links

Our site may contain links to external websites. We are not responsible for the privacy practices of those sites.

Changes to this policy

We may update this policy from time to time. Changes will be posted on this page with an updated date.

Contact

If you have questions about this privacy policy, you can reach us at masternihongo.contact@gmail.com or open an issue on our GitHub repository.