JMdict
This application uses the JMdict dictionary files. These files are the property of the Electronic Dictionary Research and Development Group and are used in conformance with the Group’s licence. The adapted JMdict data in the bundled database is offered under CC BY-SA 4.0.
English–Japanese Wiktionary dictionary
English entries and Japanese definitions are adapted from Japanese Wiktionary contributors, extracted through Kaikki.org using Wiktextract and wikitextprocessor. Fukameru selects English entries, merges senses by headword, restructures definitions, grammatical forms, and IPA, and repairs a documented extraction omission. The adapted dictionary data is offered under CC BY-SA 4.0. Source links expose contributor histories on each entry, saved card, and Anki export. Wiktionary quotations, audio, images, and etymologies are excluded; example sentences are from Tatoeba under its separate terms.
Japanese Wiktionary and contributors ↗ · Kaikki extraction and licensing ↗ · CC BY-SA 4.0 ↗
EJDict fallback dictionary
Additional English headwords with Japanese meanings come from EJDict (ejdict-hand), maintained by kujirahand and published under CC0 1.0 Universal. Fukameru imports headwords missing from the primary dictionary, expands comma-separated spelling aliases, and preserves definition and usage notation. EJDict meanings are kept separate from Wiktionary entries. Entry pages, saved cards, and Anki exports retain links to the pinned source file and identify EJDict and CC0.
KANJIDIC2
Kanji readings, stroke counts, and primary radicals are provided by EDRDG’s KANJIDIC2 project. The adapted KANJIDIC2 data in the bundled database is offered under CC BY-SA 4.0.
KRADFILE
Kanji visual component lists are provided by EDRDG’s KRADFILE project. The adapted component data in the bundled database is offered under CC BY-SA 4.0.
Tanos JLPT resources
Modern N1–N5 kanji study levels are derived from community lists compiled by Jonathan Waller at Tanos.co.uk. The machine-readable conversion is from Bluskyo's JLPT_Vocabulary project under MIT. These are study classifications, not official specifications from the Japan Foundation or Japan Educational Exchanges and Services.
Tatoeba
Example sentences are sourced from Tatoeba under CC BY 2.0 FR; some are also available under CC0. The app preserves both sentence IDs and available owner usernames for each Japanese–English pair. Dictionary examples and saved cards show available usernames and link to sentence pages with contributor history and licences. Fukameru selects a translation and connects the pair to dictionary entries; bundled sentence text is unchanged. No Tatoeba audio is included.
Kanjium
Pitch accent notation was provided by Uros O. through the Kanjium project under CC BY-SA 4.0.
swift-fsrs
Review scheduling uses swift-fsrs by Ben Smiley, pinned to revision 4fbaf20184d62f82a9f44f343337c61a2c5483e9 and licensed under the MIT License. The full notice is bundled with the app.
Optional AI policy
Dictionary, cards and study are available to people of all ages. Optional AI generation has separate 18+ eligibility and use conditions in the AI generation policy. Accepting that policy is required only for AI generation.
辞書、カード、学習は年齢を問わず利用できます。任意のAI生成には、別途18歳以上の利用条件を定めたAI生成ポリシーが適用されます。このポリシーへの同意は、AI生成を利用する場合にのみ必要です。
App notice
Fukameru is an independent study tool and is not affiliated with Anki, the Japan Foundation, Japan Educational Exchanges and Services, EDRDG, Tanos, or Tatoeba. “Anki” describes compatible import and export functionality.
Reference material may contain errors or omissions. Verify important translations with an appropriate authoritative source.
If you import or attach material, you are responsible for having the right to use it. Third-party material remains subject to its respective licence and terms.