Cdian is an offline English-Chinese dictionary that allows users to search for words using Chinese, pinyin or English and display results in simplified or traditional text. The dictionary provides clear and concise search results in a swift manner, making it a useful tool for those learning the Chinese language.

One of the main features of Cdian is its flexible input/search methods. Users can search for words using pinyin or radical character search, and the app even attempts to split sentence input into individual words. Limited wildcard searching using '*' (ZH only and slower than normal searching) is also available.

Cdian also offers multiple display options, including the ability to toggle between simplified/traditional character sets and select between light and dark themes. Additionally, the app provides 3rd party connectivity, allowing users to send words directly to AnkiDroid and share words with Cdian from other apps.

The app has a minimalistic yet functional UI, and is completely ad-free. However, extracted dictionary files require 21MB of external storage space.

Overall, Cdian is a useful tool for anyone looking to learn or improve their Chinese language skills. Its offline nature and flexible input/search methods make it a convenient and reliable resource.