The Collocation Dictionary is an iPhone application developed by Hoang Viet Le. It falls under the category of Education & Reference and is available for free. This comprehensive language learning tool is designed to help users understand the correct meaning of words and how to use them in sentences within complex contexts.

The Collocation Dictionary offers a range of features to enhance language learning. It includes a collocation of words in sentences, supported by the Oxford Collocation Dictionary, which shows which words work together. Users can also access a corpus of common sentences for each searched word, providing real-world examples of word usage.

Additionally, the application offers pronunciation guides in TOEFL (American voice), IELTS (British voice), and Australian Pronunciation. It also provides United States (US) and British transcriptions (IPA) for TOEFL and IELTS learners. Users can explore the history of their word searches and even utilize the Google Image Search feature for visual illustrations.

One of the standout features of the Collocation Dictionary is its user customization options. Users can adjust the font size to accommodate different device sizes, such as tablets or iPads. This ensures a comfortable reading experience for all users.

With the Collocation Dictionary, users can easily access linked words and explanations offered by the original Oxford Collocation Dictionary. The latest version of the application is v, updated on May 5, 2017.