Credits & licences

Kanji, radicals and vocabulary

Kanji, radical and vocabulary data come from KANJIDIC2, KRADFILE and JMdict. These files are the property of the Electronic Dictionary Research and Development Group, and are used in conformance with the Group's licence (CC BY-SA 4.0).

The course data derived from these files is shared under the same licence.

Example sentences

Example sentences come from Tatoeba, a collection of sentences and translations written by volunteers, used under CC BY 2.0 FR.

Stroke order

Stroke order diagrams come from KanjiVG, copyright © Ulrich Apel and the KanjiVG contributors, used under the Creative Commons Attribution-ShareAlike 3.0 licence. We draw them with our own animation; the stroke shapes are unchanged.

Software and fonts

• WanaKana, romaji-to-kana typing (MIT licence)
• Bootstrap (MIT licence)
• Inter and Noto Sans JP fonts (SIL Open Font Licence)
• Radical names partly based on the Unicode Kangxi radical names (Unicode licence)

Our own content

Grammar explanations and exercises, mnemonics, the graded stories, the review stage names and all artwork (including the bear icon) were made for KumaDeck.