Privacy Policy

Last updated 15 November 2026.

Nihongo Challenge ("we", "us") is a free, independent study site for the JLPT. This policy explains what happens to your information when you use it. In short: we do not ask for personal information, we have no accounts, and we do not run advertising or analytics.

What we collect

We do not collect personal information. There are no accounts, sign-ups or forms, and we do not know who you are or what you study.

Progress saved in your browser

To remember your progress, the site saves some data in your own browser (local storage): your flashcard review schedule, quiz and drill results, reading, listening and mock exam results, and the level you used last. This data stays on your device. It is never sent to us, it is not shared between devices, and clearing your browser's site data removes it. The site still works if your browser blocks this storage, but your progress will not be kept.

Cookies, analytics and advertising

This site does not set cookies of its own, and it does not use analytics, advertising or tracking tools. Its fonts are served from our own site, so your browser does not contact Google Fonts or similar services when you visit.

Hosting

The site is hosted on Vercel. When you visit, Vercel processes standard technical data, such as your IP address, browser type and the pages requested, in order to deliver the site and keep it secure, and may keep server logs. This is governed by Vercel's privacy policy.

Listening practice audio

The listening section uses your browser's built-in speech feature to read the practice scripts aloud. The scripts come from this site and are not sent to us. Depending on your browser and device, speech may be produced by services built into your operating system or browser, under their own policies.

Sharing and social links

The share buttons only build a link. Nothing is sent to Facebook or any other service until you use a share button, and then that service opens in a new tab under its own privacy policy. A shared result contains only the score text shown on the button. Links to our social accounts leave this site in the same way, so please read the policy of each service before you use it.

AI-written content

Study content on this site is written by AI and may contain mistakes; see the About page. No personal data is used to produce it.

Children

The site is for learners of all ages. Because we collect no personal information, there is none to protect or delete, but we recommend that young children use it with an adult.

Changes to this policy

If we add a feature that changes how information is handled, such as analytics or accounts, we will update this page first and change the date above.

Contact

Questions about this policy, or found a mistake in the study content? Message us on Facebook, Instagram, YouTube or TikTok.