American Heritage Thesaurus

American Heritage Thesaurus

By MobiSystems, Inc.

  • Category: Reference
  • Release Date: 2016-07-11
  • Current Version: 10.0.11
  • Adult Rating: 4+
  • File Size: 48.33 MB
  • Developer: MobiSystems, Inc.
  • Compatibility: Requires iOS 9.0 or later.
Score: 3.5
From 103 Ratings


The application is regarded as one of the flagship products in Houghton Mifflin Harcourt catalog, featuring advanced search and learning tools designed by a vastly experienced developer. It combines rich Dictionary database and extensive Thesaurus vocabulary. - THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE contains 10,000 new words and phrases, over 4,000 dazzling new full-color images, and authoritative, up-to-date guidance on usage. Thousands of definitions have been revised in rapidly changing fields such as astronomy and biology. Geographical entries and maps have been completely updated, and the dictionary’s signature feature notes on word history, synonymy, and language variation have all been enhanced and improved. - THE AMERICAN HERITAGE® ROGET'S THESAURUS offers an intelligent and sensible guide to synonym selection. It provides a wide range of synonyms, ranging from mainstream vocabulary to the colorful alternatives that make English such a rich and versatile language. Thousands of slang, informal, and regional words broaden the coverage even further. Each synonym list focuses on a clear definition that quickly guides the user to the relevant meaning. This app is tailored to professionals, students, and academics, as well as anyone who needs a comprehensive and authoritative dictionary of current English at work or at home. LATEST APP UPDАТES:  • Learn in style with any of the four colorful new themes – The colorful layout will turn your learning experience into an enjoyable routine. Customize your dictionary and benefit from the cheerful mood your favorite color brings you.  • Dive right into the intricacies of the language - With new and convenient Home page, sleeker and more intuitive visual layout, as well as innovations that enhance the speed of searches, you can get to the desired entry faster than ever.  • Translate and learn as you speak by using Talk & Translate – Use the speech recognition & text-to-speech app by downloading it for Free from the App Store. The great synergy between the two apps will be there to help you optimize your studies. SEARCH TOOLS - quickly find words with the clear, functional, and easy-to-use interface. Designed to provide the most comprehensive search experience, the dictionary combines several search tools to match or predict what are you looking for, including:  • Search autocomplete - helps you find words quickly by displaying predictions as you type.  • Keyword lookup - allows you to search within compound words and phrases.  • Camera search looks up words in the camera viewfinder and displays results in seconds.  • Voice search - helps you find an entry when you don’t know how a word is spelled. Looking for a specific word but don't know how it's spelled? We've got you covered with our automatic ‘Fuzzy filter’ to correct word spelling, as well as ‘Wild card’ filter to replace a letter or entire parts of a word with '*' or '?'. LEARNING TOOLS - engaging features that help you further enhance your vocabulary. Designed to give you freedom to structure your studies, the dictionary combines several learning tools to help you be more organized, including:  • ‘Favorites’ that allow you to create custom folders with lists of words.  • Recent list which helps you to easily review looked-up words.  • Swipe-to-delete functionality in the Recent and Favorites menus.  • Word-of-the-day option to teach you a new word every day. Feel excited by the new word or definition you just learned? Share your discovery with friends on social media, email or any other option available on your device.



  • Great dictionary, annoying app

    By Hug4719
    My fourth purchase of this dictionary. Hate being prompted to rate I 5 stars every time.
  • Good app

    By piontoto
    Good app
  • Outstanding

    By Yeizin
    When I look up any word I always understand with accuracy what the meaning of the word is. Explain what part of the speech is in a convenient and easy way. Fantastic.
  • Great Dictionary

    By Loofah1
    Miles above other dictionaries, but new interface is a step back.
  • Windows

    By Eagle of all
    I prefer Windows version
  • Good Helpful

    By Zed Iye
    It serves my purpose well. Very helpful.
  • Great dictionary, ugly interface.

    By RtfFan
    Title says it all... the interface to the dictionary is awkward to use and seems to always be asking for a review.
  • Audio quality is poor, dictionary intro is missing, and accessibility leaves a lot to be desired

    By amir81s
    Update: This is early June 2018, and all of the points I raised a long while ago below persist. In particular, the poor audio quality and the app’s approach to accessibility for the visually impaired are terrible and substandard in this day and age. As a consequence, I am lowering my rating to one star. I love American Heritage Dictionary and have been using it over the past 21 years or so in various forms. However, the switch to a new app developer by Houghton Mifflin almost 5 months ago generated some serious issues. It seems that Houghton Mifflin hasn't even bothered to properly test what MobiSystems has offered. 1. The audio quality is, simply put, terrible! If you purchase the app and click the Audio button to hear the pronunciation of the defined word, you'll be disappointed. The app costs $20 but the audio is reminiscent of a free app at best. The MobiSystem's excuse is that they want to keep the download size low by compressing the audio files. However, the app now requires 428MB of downloaded data for offline use, so, in this day and age of high-speed internet, what would be the difference between 428MB and, say, 700MB? The AHD 5 app by the previous developer was much more feature-rich, required downloading 694MB of data for offline use, and had awesome audio pronunciations. This is at best an oversight and at most poor management by Houghton Mifflin and MobiSystems. 2. If you go to the Special Topics section of the app, you'll see -- much to your surprise and dismay -- that the "Introduction to American Heritage Dictionary 5th Edition" section is not there. So it's like purchasing a book whose Introduction has been omitted. Houghton Mifflin and MobiSystems, what does this mean? A dictionary without an introduction by its editors? 3. The accessibility of the app for VoiceOver users, while slightly improved now, is quite rudimentary at best. While AHD 5 couldn't read the Definition area at the beginning and now can do that -- after a considerable amount of lobbying with the developers, the problem is that now the whole Definition area is read as a single text chunk, meaning you can't navigate by sentence, by paragraph, by definition or by sense. Moreover, if the definition for a word is long, you have to use the 3-finger gesture to move to the next page or screen of the Definition area, but VoiceOver doesn't pick up automatic reading from the new position of the cursor. Now imagine wanting to read the dictionary appendices using this very basic approach which doesn't even allow you to pause speech and resume it from the position where it was stopped. If you pause speech and then resume it, VoiceOver will read from the very beginning of the Definition area. To put it in a nutshell, reading the Definition text box with Apple's VoiceOver screen reader for the visually impaired is a serious pain in the neck. 4. And, last but not least, the new app by MobiSystems does lack features provided by the older app by English Channel. For instance, the old AHD 5 app could display all dictionary entries containing notes or synonym descriptions separately, making it easy to use the app as a study tool. The app was also perfectly accessible, to the point that the user could select the Accessibility check box from the Settings window in order to make the app compatible with VoiceOver and Apple's built-in iOS features for low-vision users. All said, the app is fast and lag-free especially if one downloads the stuff needed for offline use. One can only wish that Houghton Mifflin and MobiSystems can and want to take care of these shortcomings for such an otherwise awesome American dictionary. For now, it's just 2 stars on my part.
  • Old version much better

    By iPhoneUser 00
    Thought I'd try newer version since option to update was no longer provided. Bad decision, this has too many distractions, I just wanted a simple dictionary! Going back to old version. Wish there was an app that would remove update notifications for these instances!
  • Word origins resource is outstanding

    By S2artL
    Much more than I expected