データ出典 · Data credits
The Course section of iTao (kana → JLPT N1) is built on open data. The scene vocabulary, passages, notes and all translations elsewhere in the app are written by the iTao team. Because the sources below include CC BY-SA material, the compiled course dataset (vocabulary, kanji and example sentences as they appear in the Course section) is made available under the CC BY-SA 4.0 licence. The JMdict and KANJIDIC2 files are the property of the EDRDG and are used in conformance with the Group's licence.
OpenJLPT
JLPT N5–N1 vocabulary, kanji and example sentences (compiled dataset)
CC BY-SA 4.0 · https://github.com/evanclan/OpenJLPT
JMdict / EDICT — Electronic Dictionary Research and Development Group (EDRDG)
Vocabulary readings and glosses
CC BY-SA 4.0 · https://www.edrdg.org/
KANJIDIC2 — EDRDG
Kanji readings, meanings, stroke counts
CC BY-SA 4.0 · https://www.edrdg.org/wiki/KANJIDIC_Project.html
Jonathan Waller's JLPT Resources (tanos.co.uk)
JLPT level assignments for vocabulary and kanji
CC BY · https://www.tanos.co.uk/jlpt/
Tatoeba
Example sentences (Japanese + English)
CC BY 2.0 FR · https://tatoeba.org
open-anki-jlpt-decks (jamsinclair)
Vocabulary reading completion
KanjiVG — Ulrich Apel
Kana stroke-order paths (the stroke animations in the kana units)
CC BY-SA 3.0 · https://kanjivg.tagaini.net/
japanese-language-data (jkindrix) — grammar-curated
Grammar patterns and English explanations
CC BY-SA 4.0 (as declared by the repository) · https://github.com/jkindrix/japanese-language-data
JLPT is a registered trademark of the Japan Foundation and Japan Educational Exchanges and Services. iTao is not affiliated with them; level assignments are community estimates (see tanos.co.uk), not official lists.