The "说文解字" app, also known as "说文," is a character dictionary compiled by the Han Dynasty scholar and philologist Xu Shen. This tool is organized by radicals, with a total of 540 radicals and 9353 characters. The app features a revamped layout and editing, emphasizing simplicity, speed, accuracy, and detail.

One of the highlights of this dictionary is its support for various search methods, including radical search, pinyin search, and intelligent word search. Each character comes with detailed explanations such as pronunciation, stroke count, radical, and structure. The definitions are meticulously crafted, referencing original texts from "说文解字" for accuracy and providing explanations categorized by pronunciation and part of speech for easy reference.