Privacy policy

Nihongo Path is operated by Opusify IT Solutions, which is the data controller for everything described below — and, under Indian law, the Data Fiduciary. Questions about your data, requests to see or remove it, and grievances go to privacy@nihongopath.app. Anything else about the site can go through the Opusify IT Solutions contact page.

Every lesson, guide and index page can be read without signing in, and no page on this site shows display advertising. A few pages recommend textbooks with links to Amazon; where those carry an affiliate tag, Amazon pays a commission on purchases, and a link you click is recorded in Google Analytics as a click on that book. Nothing about you is sent to Amazon until you are on Amazon’s own site. Three things reach third parties even when you are not signed in: the page itself is served from Google’s infrastructure (see “Where data is kept”), the Japanese web font is fetched from Google Fonts, so Google receives your IP address and browser details as part of serving the font file, and the site measures page views with Google Analytics (see “Measuring page views”).

Your theme choice (light or dark) is stored in your browser’s local storage. It never leaves your device.

Creating an account adds a private study tracker. To run it the site stores, against your account:

• Your email address, display name and, if you sign in with Google, the profile photo URL Google provides.
• Where you are in the daily plan: current day, phase and level, your streak and longest streak, total study minutes and lessons completed.
• A progress record for every grammar point, word, kanji, reading passage and listening exercise you have answered: attempts, correct and incorrect counts, and the spaced-review schedule derived from them.
• Daily progress, study sessions, quiz results and mock-exam results, including which answers you chose.
• Items you save, and your settings (daily minutes target, whether to show furigana).

This data exists to show you your own progress and to schedule your review. It is not used for advertising, not sold, and not shared with anyone other than the service providers named below.

Signing in sets a single cookie, __session, which keeps you signed in for up to 14 days. It is marked HttpOnly and Secure, is sent only to this site, and holds nothing but a signed session token. Signing out deletes it.

Google Analytics sets two more, _ga and _ga_…, which hold a random identifier so that several page views in a row can be counted as one visit rather than several. They last up to two years and are described in the next section. There are no advertising cookies, and nothing on this site is used to build an advertising profile of you.

When you are signed in, the site also keeps an offline copy of your progress in your browser’s IndexedDB so quizzes survive a dropped connection. Clearing site data in your browser removes it.

The site uses Google Analytics 4, provided by Google LLC, to count how many people read each page and which pages they arrive on. It records the page address, the referring page, your approximate location from your IP address, your device, browser and language, and how far down the page you scrolled. It also records that you started or finished a quiz or exercise, finished a mock exam, marked a lesson as learned, created an account or logged in, but never your answers or scores. It does not record your name or email address, and the study data listed above is never sent to it. Google Analytics is loaded on every page, whether or not you are signed in.

This is used only to decide which lessons to write next and which pages need fixing. The figures are not sold, and Google Signals, advertising features and data sharing with Google’s advertising products are left off.

You can opt out for every site you visit with Google’s Analytics opt-out add-on, with your browser’s tracking protection or an ad blocker, or by blocking cookies for this site. Google Analytics does not act on the “Do Not Track” browser setting, so that setting alone will not stop it. Nothing on the site stops working if you do; none of the lessons, quizzes or exams depend on analytics.

The site runs on Google Cloud through Firebase: Firebase App Hosting serves the pages, Firebase Authentication handles sign-in, and Cloud Firestore stores the account data above. Google Analytics, described in the previous section, is the fourth Google service involved, and its figures are held on Google’s servers rather than this site’s. These services are provided by Google LLC and the data is stored in Google’s us-central1 region in the United States. If you sign in with Google, Google shares your name, email address and profile photo with the site under Google’s own privacy policy.

That means your account data is processed outside the country you are reading from, including outside India. Google LLC processes it on Opusify IT Solutions’s instructions to run the service, under Google’s Cloud data processing terms; it is not transferred to anyone else. If you would rather your data were not stored in the United States, read the lessons without an account — nothing on this site requires one.

Your profile page has a Your data section with three controls. Download my data gives you everything listed above as a JSON file. Reset my progress clears what you have studied, either entirely or for one level, and keeps your account. Delete my account removes your sign-in and every record permanently. Each asks you to confirm your identity first, and deletion cannot be undone, so download your data first if you want a copy. If you cannot reach the page for any reason, write to privacy@nihongopath.app from the email address on the account.

Opusify IT Solutions is registered in India, so the Digital Personal Data Protection Act, 2023 applies to the account data described above. Under it Opusify IT Solutions is the Data Fiduciary and you are the Data Principal. You may ask what personal data is held about you and who it has been shared with, ask for it to be corrected or completed, ask for it to be erased, nominate someone to exercise these rights on your behalf if you die or become incapacitated, and raise a grievance about any of it.

The three controls described above answer the common requests immediately and without asking anyone: Download my data for access, Reset my progress for partial erasure and Delete my account for full erasure. For anything those do not cover — a correction, a nomination, or a grievance — write to privacy@nihongopath.app from the email address on your account. That is the route for grievance redressal; if you are not satisfied with the response you may complain to the Data Protection Board of India.

The service is not directed at children under 13, and we do not knowingly create accounts for them.

This page is updated whenever the site’s behaviour changes; the date below is the date of the current version. The terms of use describe the rest of the relationship.

By Nihongo Path · Updated 2 November 2026