Last updated: August 2026
This End User License Agreement ("Agreement") is between you and the developer of Manabu ("we", "us"). By downloading, installing, or using Manabu (the "App"), you agree to be bound by this Agreement. If you do not agree, do not use the App.
Use of the App's sync features is also governed by the Manabu Privacy Policy, which describes what data the App collects and how it is handled.
We grant you a personal, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control, for your own personal, non-commercial language study.
This is a license, not a sale. You own your study data and the content you upload; we retain all rights to the App itself.
You agree not to:
The App — its code, design, and original content — is owned by us and protected by copyright and other intellectual property laws. Third-party data and software included in the App remain the property of their respective owners and are used under their own licenses (Section 6). Your study data and uploaded content remain yours (Section 5).
The App lets you upload content to our servers: a custom profile picture. You keep ownership of anything you upload. By uploading, you grant us a limited, worldwide, royalty-free license to store, process, and transmit that content solely to operate the service: hosting your picture and delivering it back to your own signed-in devices. This license ends when you delete the content or your account.
You are responsible for what you upload. You warrant that you own or have the necessary rights to any content you upload, and you agree not to upload content that is unlawful, infringing, hateful, harassing, sexually explicit, or otherwise objectionable — even though profile pictures are currently visible only to your own account. We have no obligation to monitor uploaded content, but we reserve the right to remove any content and/or terminate any account that violates these rules, without notice. There is zero tolerance for objectionable content.
You can remove your uploaded picture at any time in the App, and deleting your account permanently deletes all uploaded content from our servers.
The App includes third-party data and software used under their own licenses, including JMdict and KANJIDIC2 (property of the Electronic Dictionary Research and Development Group, used in conformance with the Group's license, CC BY-SA), KanjiVG (© Ulrich Apel, CC BY-SA), pitch-accent data derived from Wadoku and UniDic, and the FSRS scheduling algorithm via ts-fsrs (© Open Spaced Repetition, MIT). Full attributions are listed in the App under Settings → Credits. Nothing in this Agreement limits the rights those licenses grant you in the underlying data.
We may update, change, or discontinue the App or any part of it — including the sync service — at any time. Updates may be required for continued use. We are under no obligation to provide any particular feature, update, or support, though we care about the App and intend to.
This Agreement is effective until terminated. It terminates automatically if you breach it; we may also suspend or terminate accounts that violate Section 5's content rules or abuse the service. You may terminate at any time by deleting your account and uninstalling the App. Sections 4, 6, 9, 10, and 12 survive termination.
The App is provided "as is" and "as available", without warranty of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. Dictionary content, readings, pitch accents, and study scheduling are provided for learning purposes without any guarantee of accuracy or completeness. Some jurisdictions do not allow the exclusion of implied warranties, so parts of this section may not apply to you.
To the maximum extent permitted by law, we are not liable for any indirect, incidental, special, consequential, or exemplary damages arising from your use of (or inability to use) the App, including loss of data. Our total liability for any claim under this Agreement is limited to the amount you paid for the App in the twelve months before the claim, or ten US dollars, whichever is greater.
If you obtained the App through the Apple App Store or Google Play, the store's own terms also apply. Apple and Google are not parties to this Agreement, are not responsible for the App or its content, and have no obligation to provide support or maintenance for it. Apple and its subsidiaries are third-party beneficiaries of this Agreement and may enforce it against you upon your acceptance.
This Agreement is governed by the laws of the United States of America, without regard to conflict-of-law rules, except where the mandatory consumer-protection law of your own country of residence applies instead.
We may revise this Agreement from time to time. Changes will be posted on this page with an updated date; material changes take effect no earlier than posting. Continued use of the App after a change takes effect constitutes acceptance.
Questions about this Agreement can be sent through the contact options in the App's Settings → About screen or on this website.