The American Heritage Dictionary is a comprehensive and accessible English dictionary available on iPhone. It is the perfect solution for professionals, students, and academics, as well as anyone who needs a comprehensive and authoritative dictionary of current English at work or at home.

With over 10,000 new words and phrases, 4,000 new full-color images, and updated guidance on usage, the Fifth Edition of the American Heritage Dictionary is a valuable resource. It provides authoritative definitions, word history notes, synonymy, and language variation information. The dictionary also includes thousands of quotations from classic and contemporary writers, making word meanings easier to understand.

In addition, the app offers a range of search tools to quickly find words, including search autocomplete, keyword lookup, camera search, and voice search. The interface is clear, functional, and easy to use. The app also includes learning tools such as favorites, recent list, swipe-to-delete functionality, and a word-of-the-day option to enhance vocabulary.

The American Heritage Dictionary also offers the option to purchase the American Heritage Roget's Thesaurus, which provides a wide range of synonyms and coverage of slang, informal, and regional words.

Overall, the American Heritage Dictionary is a valuable tool for anyone looking for a comprehensive and authoritative English dictionary on their iPhone.