Terms of Use
Bunmyaku · version 1.2 · last updated: 2 September 2026
By installing and using Bunmyaku you accept the terms below. If you do not agree with them, do not use the app.
What this app is
Bunmyaku is a tool for studying Japanese vocabulary on your own, at JLPT levels N5 through N1. The learning — reviews, every question type, the study plan and your progress — runs entirely on your device and without an internet connection. The app can also read Japanese text from a photo so you can collect vocabulary of your own. Version 1.2 adds optional AI features, which use a server and which you start yourself. This is not a taught course, a certification service, or preparation that guarantees passing the JLPT.
License
The app is licensed under Apple's standard license terms (Licensed Application End User License Agreement). These terms supplement them and describe what is specific to Bunmyaku; where the two conflict, Apple's terms prevail.
You receive a personal, non-exclusive, non-transferable license to use the app on devices associated with your Apple ID, in line with App Store rules.
The content — dictionary entries, readings, meanings, example sentences and translations — is protected by copyright and remains the property of the app's author. You may use it for your own study. You may not copy it in bulk, publish it, resell it, use it to build a competing product, or use it to train machine-learning models.
Photos and the text you bring in yourself
The app reads Japanese text from photos you point it at. It is your responsibility that you are entitled to use those photos for your own study. A photo is read on your phone and does not leave the device; the app neither saves it nor sends it anywhere. Words and sentences collected this way are your material and stay on the device.
JLPT material — a one-time purchase
- JLPT level N5 is available free of charge, in full.
- Levels N4, N3, N2 and N1 are opened by a one-time purchase. It is not a subscription and it does not expire. You can buy a single level, any bundle of several, or all of the material — the full set costs less than the levels bought separately.
- The catalogue covers every combination of levels, so when you buy the rest you pay only for what you do not already have.
- If you bought "Premium" before version 1.2, you have all of the material, N2 and N1 included, with no second payment. That purchase is the same product that has been in the store since version 1.0.0, and its meaning grows with the material: a new level opens inside it by itself.
- Payment is handled by Apple through the App Store. The app shows the price that applies at the moment of purchase, in your currency.
- The purchase is tied to your Apple ID. You can restore it on another device with Restore purchases.
- Refunds are handled solely by Apple, under App Store rules, at reportaproblem.apple.com.
- A refund closes the material it covered again. The progress you have already made is not deleted and stays available in reviews.
The AI features — an auto-renewing subscription
The AI features are separate and optional. There are two: Analyze breaks into words a sentence you read from a photo and confirmed, and Write a sentence with AI composes a short example sentence for a chosen entry in its dictionary form. They are the only part of the app that costs something every time it is used, which is why they are billed as a subscription rather than sold outright.
- Every month you get a free allowance of calls, at no charge and without a subscription. The app shows how many are left and when the allowance comes back.
- The subscription is available monthly or yearly and renews automatically until you turn it off. The app shows the price and the length of the period before you buy, in your currency.
- Payment for the next period is charged to your Apple account within 24 hours before the current period ends.
- Canceling: in your Apple ID settings (Settings → your name → Subscriptions), at the latest 24 hours before the current period ends. The subscription keeps working until the end of the period you paid for.
- The subscription applies to this one app and does not cover the JLPT levels — not now and not later. Material bought outright stays yours regardless of it, and taking out the subscription unlocks none of it.
- The subscription is also subject to fair use: a daily and a monthly call limit apply, and the app shows both alongside your remaining allowance.
- Billing is handled by Apple through the App Store; the refund rules above apply there too.
- The AI features need an internet connection and may be temporarily unavailable — during maintenance, for example, or an outage at the model provider. The rest of the app keeps working normally.
Your data
Your progress and the words and sentences you add are saved only on your device. Keeping them safe is up to you — deleting the app deletes that data. Use Export progress in Settings to keep a copy.
The AI features are the exception, and only when you start them: what goes to the server is one sentence you confirmed, or one entry from your vocabulary. Your study history does not, nothing that could identify you does, and a photo never does — text in a photo is read by the phone itself. What is stored, and for how long, is described in the privacy policy.
Accuracy of the content
The material was prepared with due care and is checked automatically, but natural language is more complex than any simplification of it. Meanings and examples are educational and do not constitute a linguistic norm. If you find an error, write in — corrections go into later releases.
This applies to the AI features separately: their answers are generated by a language model and can be wrong. They are a hint, not an exam grade or a teacher's opinion — treat them as a starting point for checking, not as a verdict. That goes especially for words and sentences brought into your study this way: you see them before they are added, and you decide what goes in.
Bunmyaku is not affiliated with, authorized by or endorsed by the Japan Foundation, Japan Educational Exchanges and Services, or any body that administers the Japanese-Language Proficiency Test. Level labels describe how the material is ordered for learning; they are not a reproduction of an official examination vocabulary list, and no such exhaustive list is published. Using the app is not a promise that you will pass any examination.
Liability
The app is provided "as is", without warranty of fitness for a particular purpose. To the extent permitted by law, the author is not liable for damages arising from use of the app, including loss of study data. This provision does not limit consumer rights granted by mandatory provisions of law.
Changes to these terms
These terms may change with later versions of the app. The version that applies to this release is always available at this address, with the date of the last update. Continuing to use the app after a change means accepting the new terms.
Governing law
These terms are governed by Polish law. This does not affect the protection available to a consumer under the law of their country of habitual residence.