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: 3.96454
From 141 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.



  • HMS Beagle

    By Origin of Species
    I’ve found “American Heritage” to be superior to Webster’s, and this EXCELLENT app is a must for serious readers. I refer to it often as I read on my Kindle app. Charleston, SC
  • Meh

    By tajmirage
    It's needs a refresh. It feels like the designers don't actually use the app.
  • Eclectic

    By roughouse
    American Heritage provides an up to date experience for word searchers, unlike the staid attitudes of other dictionaries.
  • American Heritage

    By Mother and Homeschool Teacher
    The word of the day should be useful, not random names and words that no one has ever even heard of, nor wants to hear of! It's a waste of my screen time!
  • Awesome

    By Linisac
    This dictionary provides comprehensive etymological explanations of words.
  • Developer not interested in - or incapable of - addressing customer support request

    By Will & Mask
    UPDATE ll: rather than give users the full value for their purchase with continuous updates, Mobisystems have decided to release a ‘Fifth Edition’, for a significant additional fee. It is the same app, people. There is not enough additional content to justify publishing another addition, and you can bet that they haven’t updated the feature-set. If there is, and if they have, then they are obligated to pass those improvements on to existing customers. Shameless. One star. FOR THOSE WHO ARE HAVING DIFFICULTY GETTING FULL (or any) VALUE FROM THIS APP: UPDATE: I have discovered the solution to the issues I was having - blank screen on iPhone7, and automatic crashing on iPad mini: go to 'settings' in the app sidebar; turn on 'Enable offline content' (if you aren't hooked up to the internet, it won't allow you to initiate this operation, but once you are connected to wifi, you can proceed); under the button you just pressed, you will see in red letters, 'downloading'; after a minute or so, you will be informed that you can use the app offline. The app works fine now. I don't understand why the developer is so disinterested in helping customers who ask for help, but I suspect it's a cultural/language issue: Mobi Systems seems to be a Russian venture. 3 stars for zero customer support; app is functional, after self-directed troubleshooting; Mobisystems shouldn't make downloaded content optional when they clearly don't have the capacity or infrastructure to support server-side content delivery or troubleshooting support. ORIGINAL (albeit 3rd version) REVIEW: One Star: Developer was happy to respond to my initial 5-star review (prompted by their incessant request, in-app, for 5-star review); Subsequently, the app stopped working, both on iPhone7 and iPad mini - I revised my review to 1 star, requested refund and apology, and sent customer service request, which was ignored except the developer shrugged and told me they didn't have the ability to give me a refund. Somehow developer has managed to have my review removed from this page. Very disappointed, given the expense of this app and my heavy dependence on the previous, ADHD4 app, not developed by Mobi, which probably explains why it is still working well for the most part after years of use.
  • So far so good

    By gfmorales
    Great app. The paid version is worth it.
  • Love the dictionary

    By TSoules
    Hate the happy stars
  • Annoying pop-up

    By Amac2644
    The app is fine, but for one “feature”: every time you open it, a pop-up appears harassing you to rate the app five stars. This tactic makes the whole experience feel chintzy, even embarrassing. Shame on the developers for tainting what is otherwise a stellar publication.
  • So far so good.

    By Nsxlane
    I’ve only had this app for a short period, but I have always been a fan of the American Heritage Dictionary. The word histories are great. Just yesterday, I used it around the family dinner table when my kids had a question about how a skillet was different than a pan. I grew up in the Midwest using the word skillet and now live in the northeast where the word pan (or frying pan) is used. I didn’t know if skillet and pan were the same or if maybe a skillet was a specific type of pan. AHD’s word history resolved this for us. Look it up yourself to find out the answer :-)