Ultimate Lac Viet Dictionary is an iPhone application developed by Ho Cong Chien. This free app falls under the Education & Reference category, offering a powerful tool for language learners.

With a vast database of approximately 300,000 words and phrases, Ultimate Lac Viet Dictionary provides users with a comprehensive collection of vocabulary. The contents are well-compiled and regularly updated from reliable sources such as the Internet and newspapers. This ensures that users have access to the most up-to-date information.

One of the standout features of this dictionary is its cross-referencing capability. Within the Definitions window, users can simply click on any word to view its meanings, allowing for a seamless and efficient learning experience.

Ultimate Lac Viet Dictionary also offers useful functionalities such as bookmarks, allowing users to save and easily access their favorite words or phrases. Additionally, the app provides a "Word of the Day" feature, which presents users with a new vocabulary item every day, facilitating daily learning and expanding language proficiency.

Each item in the dictionary includes its pronunciation, transcription, meanings, examples, compound words, and related entries/items. For Vietnamese words, users can connect to the Internet to utilize the pronunciation utility, further enhancing their language learning journey.

Overall, Ultimate Lac Viet Dictionary is a valuable language learning tool for iPhone users. Its extensive database, regular updates, cross-referencing feature, and additional utilities make it a comprehensive resource for learners of all levels.