When comparing Kodansha Kanji Learners Dictionary vs Jishop, the Slant community recommends Jishop for most people. In the question“What are the best Japanese/English dictionary mobile apps?” Jishop is ranked 5th while Kodansha Kanji Learners Dictionary is ranked 7th. The most important reason people chose Jishop is:
The free version shows the 1006 Gakushū kanji. Some versions (desktop and android) give a 30 day full version trial before reverting to the limited version.
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Pros
Pro Cross-references to Heisig's "Remembering the Kanji" and other sources
Pro Easy to look up kanji through several different methods
You can look up kanji through the dictionary's "SKIP" stroke-counting method or by a reading or compound word.
Pro Limited free version available for the most common kanji
The free version shows the 1006 Gakushū kanji. Some versions (desktop and android) give a 30 day full version trial before reverting to the limited version.
Pro Kanji dictionary entries are separated by 'theme'
There is often a slight correlation between pronunciation and shades of meaning for kanji, which most dictionaries don't seem to show you. Jishop will try to tease these connections out, helping to significantly clarify some rather broad kanji.
Pro Different (and better) radical lookup mechanism than the typical radkfile indexes
Most EDICT skins use the radkfile mechanism, which is 1) riddled with errors and 2) rather incomplete. Jishop has its own non-bushu lookup mechanism that is significantly easier to use once you get used to the slightly quirky interface.