Terms of Use

Last updated: November 7, 2026

These Terms of Use govern your use of "JLPT Japanese Vocabulary 10000" provided by JUUVO. By using the app, you agree to these terms.

The Japanese-Language Proficiency Test (JLPT) is administered by the Japan Foundation and Japan Educational Exchanges and Services (JEES), and their names and marks belong to their respective owners. This app is an independent study aid, not affiliated with or endorsed by the Japan Foundation or JEES.

Subscriptions

The Plus and Pro plans are auto-renewing subscriptions
Prices are as displayed for each plan
If you purchased on the App Store, cancel in your App Store settings at least 24 hours before the end of the current period
If you purchased on Google Play, cancel in your Google Play subscriptions before the end of the current period
Refunds after purchase are subject to the refund policy of the store where you purchased (Apple or Google Play)

Prohibited conduct

Reproducing, republishing, or distributing the app's content without permission
Reverse engineering the app

Disclaimer

The app's content is intended as a study aid, and we do not guarantee its accuracy.

Data sources

The app's word list was independently compiled with reference to the following public data sources.

Data source	Origin	License
tanos.co.uk JLPT vocabulary lists / elzup/jlpt-word-list	www.tanos.co.uk/jlpt / github.com/elzup/jlpt-word-list	CC BY / MIT
NINJAL Educational Vocabulary List (basic vocabulary database for Japanese-language education)	National Institute for Japanese Language and Linguistics (NINJAL)	CC BY 4.0
wordfreq corpus frequency data	github.com/rspeer/wordfreq	Apache 2.0 (data: CC BY-SA 4.0)

The app's word list was built by statistically weighting the public data sources above and independently selecting and editing the 10,000 most educationally important words mapped to the JLPT N5–N1 level framework.

Attribution (CC-BY licenses)

This app references and uses data sources published under CC-BY licenses:

tanos.co.uk JLPT vocabulary lists — www.tanos.co.uk/jlpt / CC BY 3.0
NINJAL Educational Vocabulary List (National Institute for Japanese Language and Linguistics) — www.ninjal.ac.jp / CC BY 4.0

Open-source licenses

The app makes use of the following open-source software.

elzup/jlpt-word-list — MIT License (used at build time only, for formatting and importing vocabulary lists)
wordfreq — Apache License 2.0; data CC BY-SA 4.0 (used at build time only, for computing corpus frequency)

Audio data

The audio files (mp3) bundled with the app were pre-generated using Google Cloud Text-to-Speech (Wavenet / Chirp3-HD). Distribution of the audio data is based on the applicable service agreement.

Changes to these terms

These terms may be changed without notice. By continuing to use the app after changes take effect, you agree to the updated terms.

Contact

contact@juuvo.app