우리말찾기 (Woorimalchaggi) is an Android app that allows users to search for 547,690 headwords from the Korean dictionary. With this app, users can search for words using various methods such as word search, wildcard search, initial consonant search, and medial vowel search. It provides a wide range of applications, including word games like word chain, crossword puzzles, and word battles, as well as improving vocabulary, writing lyrics, and composing poetry.

The app supports wildcard search using the '%' symbol, allowing users to search for words regardless of their length. Additionally, the '_' symbol can be used in place of a specific character, making it easier to find desired words. The app automatically excludes spaces when searching for words.

Furthermore, the app offers the option to search for words based on their initial consonants or medial vowels. Users can search for words starting with a specific initial consonant or ending with a particular medial vowel. They can also search for words that contain a specific initial consonant or medial vowel.

After conducting a search, users can select a word from the results to view the corresponding entry in the National Institute of Korean Language's Standard Korean Dictionary.

Please note that the developer's contact information is not provided in this review.