📱 The full official (Japanese) text is also shown in the app. You can check the latest version in the app under "Settings > Terms, Privacy & Licenses".
These Terms of Use (the "Terms") set out the conditions for using "Koisuru Nihongo Cefrly Lab" (applicationId: com.cefrlylab.ja, the "App"). You are deemed to have agreed to all of the Terms by (a) installing the App, (b) launching or using it, or (c) tapping agree on the consent screen. If you do not agree, stop using the App immediately and uninstall it.
Article 1 (Definitions)
The "App" means the application published on the App Store / Google Play as "Koisuru Nihongo Cefrly Lab", together with its accompanying data and any updated versions.
The "Developer" means the individual who owns the copyright in the App and develops and provides it. A "User" means any individual who uses the App.
"Content" means all expressions contained in the App, including example sentences, English translations, stories, conversations, difficulty classifications, JLPT level labels, explanations, screen designs, logos, icons, audio, and images.
Article 2 (Grant of license)
Subject to your compliance with the Terms, the Developer grants you a non-exclusive, non-transferable, non-sublicensable, revocable right to use the App solely for your personal study of the Japanese language.
All copyrights, trademarks, and other intellectual-property rights in the App and the Content belong to the Developer or their rightful owners; nothing in the Terms transfers any such rights.
Article 3 (Prohibited conduct)
Users must not: copy, modify, adapt, create derivative works of, translate, redistribute, sell, lend, or publicly transmit all or part of the App or the Content (except copies for private use).
Users must not reverse engineer, decompile, disassemble, or analyze/extract the source code (except to the extent expressly permitted by law), nor use the App commercially (for-profit training, classes, sale of teaching materials, incorporation into corporate training, etc.).
Users must not operate the App with automated tools, bots, or scripts; interfere with its operation; use it for unauthorized access or attacks; violate laws or public order and morals; or infringe third parties' copyrights, trademarks, privacy, portrait rights, or other rights.
Article 4 (Fees and in-app purchases)
The App is free to use in its basic form; some features and materials are unlocked through a one-time ("buy once") in-app purchase. There are no subscriptions (monthly or yearly).
Prices follow what is displayed in each store (App Store / Google Play). Payment and refunds follow each store's terms and refund policies. The included content and the scope available for free may change with updates, but a purchased unlock (access to all materials) will be maintained.
Article 5 (No warranty)
The App is provided "AS IS" and "AS AVAILABLE". The Developer makes no warranty of any kind, express or implied, as to the accuracy, completeness, currency, usefulness, or fitness for a particular purpose of the Content, nor as to operation, continuity, safety, or the absence of errors or malware.
You acknowledge in advance that the Japanese example sentences, English translations, difficulty classifications, JLPT level labels, story content, and other materials may contain errors.
All images in the app (backgrounds, scenes, buildings, landscapes, characters, icons and the like) are illustrations. They are created to aid understanding and to set the mood of the material; they do not accurately reproduce the appearance of any real place, building, shop, product or person, and the real thing may differ.
Article 6 (No guarantee of learning outcomes)
The App is a tool that assists learning; it does not guarantee improvement in language ability, attainment of any particular level, passing any exam, or any other learning outcome. Results depend on many factors, including the amount of study, effort, aptitude, and environment of the User.
Article 7 (Limited purpose of use)
The App is a learning material. It must not be used for drafting or consulting business documents, for legal, medical, safety, financial, or emergency matters, for translation/interpreting work, for advising third parties, or in any other situation where the accuracy of the Content materially affects significant interests. The Developer accepts no liability for damage arising from use contrary to this Article.
Article 8 (Disclaimer and limitation of liability)
To the maximum extent permitted by law, the Developer is not liable for any damage arising from use of, or inability to use, the App (including direct, indirect, incidental, special, or consequential damage, lost profits, loss of data, device failure, and third-party claims).
The Developer's liability to a User for damages, whatever the cause, is capped at the amount (including tax) that the User actually paid through the stores for the App's in-app purchases. Refunds follow each store's refund policy.
Notwithstanding the two preceding paragraphs, the Developer remains liable, in accordance with Article 8 of the Consumer Contract Act of Japan and other mandatory provisions of law, for damage caused by the Developer's willful misconduct or gross negligence and for damage to human life or body.
Article 9 (Data storage, backup, and loss)
The App stores learning progress, settings, history, and similar data only on the User's device and does not transmit or store them on external servers. Using "Save / restore backup" in the settings screen, you can export and import your data as a file.
If data is lost due to uninstalling the App, clearing storage data, device initialization, failure, loss, or replacement, compatibility issues accompanying OS or App updates, automatic clearing of WebView storage, failure to restore a corrupted file, or the like, the Developer has no obligation to recover the data and accepts no liability for the loss. Users are responsible for making backups regularly.
The backup / restore feature is provided as is, and its accuracy, continuity, and readability are not guaranteed.
Article 10 (Dependence on third-party services and OSS)
The App depends on APIs and services provided by the OS (speech synthesis — iOS: AVSpeechSynthesizer / Android: Text-to-Speech —, notifications, WebView, etc.) and on open-source software such as React, Vite, and Capacitor. The licenses of the OSS are listed on the "Open-source licenses" screen.
The Developer is not responsible for the quality, continuity, or compatibility of these third-party features and services; their suspension, change, malfunction, or termination may make part or all of the App unavailable. The Developer accepts no liability for damage arising therefrom.
Article 11 (Trademarks and third-party rights)
The JLPT (Japanese-Language Proficiency Test) is administered by the Japan Foundation and Japan Educational Exchanges and Services (JEES). This App refers to the publicly available JLPT level classification (N5–N1), but it is not certified, sponsored, or endorsed by the test organizers or any other public institution.
Apple and App Store are trademarks of Apple Inc.; Google Play is a trademark of Google LLC. Other product names, service names, and company names appearing in the App are trademarks or registered trademarks of their respective owners.
Article 12 (Changes to and discontinuation of the App)
The Developer may change, add, or remove the App's content, features, data, design, etc., and may suspend or terminate its provision. When a significant change or termination is expected, the Developer will endeavor to give advance notice in the App or on the store listing page, except where unavoidable circumstances prevent it. The Developer's liability for damage arising from these actions is governed by the preceding Articles.
Article 13 (Inability to continue the service due to unavoidable circumstances)
The App is developed by an individual. Updates, distribution, and support may be suspended for an extended period — and the App may ultimately be withdrawn from distribution — due to platform policy changes, major SDK/OS specification changes, raised distribution requirements, termination of third-party services the App depends on, force majeure (natural disasters, war, pandemics, communication failures, cyber-attacks, etc.), or unavoidable personal, physical, financial, or life circumstances of the Developer.
In such cases, Users may not claim additional compensation or refunds, and the Developer accepts no liability for damage arising from those circumstances. For one-time purchases, each store's refund policy takes precedence. The Developer will endeavor to announce important information where possible, but advance notice may be impossible in the circumstances above.
Article 14 (Amendment of the Terms)
The Developer may amend the Terms in accordance with Article 548-4 of the Civil Code of Japan where the amendment conforms to the general interest of Users, or where it is not contrary to the purpose of the Terms and is reasonable in light of its necessity and appropriateness. The amended Terms take effect upon an app update or upon being posted on this page, and continued use thereafter constitutes agreement.
Article 15 (Exclusion of anti-social forces)
Users represent and warrant that they are not members of organized-crime groups or other anti-social forces and that they will not use the App for the activities of such forces. If a violation is found, the Developer may prohibit use immediately without prior notice.
Article 16 (Governing law and jurisdiction)
The Terms and everything related to use of the App are governed by and construed in accordance with the laws of Japan.
Any dispute between the Developer and a User concerning the App shall be subject to the exclusive jurisdiction, in the first instance, of the court having jurisdiction over the Developer's place of residence; provided that where the Consumer Contract Act or other mandatory law allows the User to sue in the court of the User's own domicile, this paragraph does not apply to that extent.
Article 17 (Severability, assignment, contact)
If any provision of the Terms, or part of one, is held invalid or unenforceable, the validity of the remaining provisions is unaffected. Users may not assign, succeed to, or pledge their position or rights and obligations under the Terms to any third party without the Developer's prior consent.
Contact: cefrlylab@gmail.com (As an individual developer, the Developer does not guarantee individual replies or any particular speed or scope of support. For purchases and refunds, follow each store's procedures.)