The kanji vectors used in the KSP app (and previous desktop version) were provided by KanjiVG. KanjiVG is copyright © 2009-2013 Ulrich Apel and released under the Creative Commons Attribution-Share Alike 3.0 license.

Definitions within the KSP app were derived from the EDICT dictionary, provided by the Electronic Dictionary Research and Development Group, and used in conformance with the EDRDG licence.