The "Kodansha Kanji Learner's Dictionary" is a kanji dictionary based on the "New Japanese-English Character Dictionary" by Jack Halpern at the CJK Dictionary Institute and published by Kenkyūsha. Originally published in 1999 (with a minor update in 2001), a revised and updated Second Edition was issued on 2013, reflecting the new changes in the Joyo Kanji mandated in 2010. This Revised and Expanded Edition increases the number of kanji entries from 2,230 to 3,002, as well as changing all pronunciations from romaji to kana. There also exists electronic forms of this dictionary for both iOS and Android. A more extensive version of this dictionary by the CJK Dictionary Institute is also published by Kodansha called the Kodansha Kanji Dictionary.