Comparison

Dictionary and Thesaurus Pro vs Terminology

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dictionary and Thesaurus Pro

Access a comprehensive offline dictionary and thesaurus with extensive content in multiple languages. Explore definitions, synonyms, and specialized dictionaries for various fields. Enjoy an ad-free experience with features like word games and instant lookups.

Highlights
  • Ad-free experience
  • Offline English dictionary and thesaurus
  • Offline dictionaries in 13 languages
  • Offline translations to over 40 languages
  • Specialty dictionaries (Medical, Legal, etc.)
  • Word games and daily content
  • Instant word lookup from other apps
Features
Currently charting
Read full description

Get the world's most comprehensive ad-free dictionary and thesaurus with extensive offline dictionary content and synonyms. Dictionary Pro is the premium version of The Free Dictionary app, featuring: * No ads. * A comprehensive English offline dictionary and offline thesaurus. * Offline dictionaries in 13 other languages. * Offline translations of English into more than 40 languages. * Dozens of other offline translation options. Rated #1 app in the App Store in the paid reference category in 109 countries 2011–2019 (Source: http://www.appannie.com/apps/ios/app/492085918/app-ranking/#device=iphone&type=best-ranks) Plus TheFreeDictionary's classic app content: * Find every word you search for. Get results from trusted sources: Webster's Dictionary Roget's Thesaurus The American Heritage Dictionary + More than 100 dictionaries and encyclopedias from these top publishers: McGraw-Hill Houghton Mifflin HarperCollins Random House Elsevier + More! * Learn the word. Clear definitions, example sentences, etymologies, illustrations, and more. * Learn how to say it. Play audio pronunciations and hear it pronounced. * Learn something new. Word of the Day and other fresh daily content. * Find the perfect synonym fast. East-to-use Thesaurus with synonyms, antonyms, and related words. * Explore topics in-depth. Multiple specialty dictionaries and encyclopedias: Medical Legal Science Financial Idioms Acronyms and Abbreviations + More! * Watch idioms in action. View idioms videos inside the app and see idioms and slang explained. * Play word games. Spelling Bee, Hangman, and more. * Access dictionaries in 13 other languages, including: Spanish French German Italian Portuguese Russian Chinese + More! What makes Dictionary Pro the most user-friendly dictionary app? * Instantly look up words in apps or webpages! Just highlight the word you want to look up, tap "Share," then tap "More" in the bottom menu and turn on the "Define" option. You will then see a "Define" icon in the menu. Tap it to see the definition of the highlighted word! * Voice search. Just say the word to look it up. * Advanced Search options. * Look up the definition of any word on the page. Just highlight and tap "Definition." * Save bookmarks with one tap and sync them to all your devices. * Customize your homepage: Move, add, or remove articles, games, even local weather. * Jump to Definition, Thesaurus, or Translations with one button. * Navigate the app in more than a dozen languages with the multilingual interface. * Adjust font size. * Share your favorite definitions and articles via social networks, email, or text. EXCLUSIVE * Earn meals for hungry children through The Free Dictionary's partnership with the World Food Program—just by using the app! Not convinced? Read our reviews to see why our users say this is the best dictionary app they've ever used. How do we do it? Farlex is a leader in dictionary apps. We work with the best publishers to bring together trusted content in the most comprehensive, authoritative dictionary apps on the market. Find our other apps by searching "Dictionary by Farlex" in the App Store. * For app developers: The Free Dictionary app can be accessed by other apps with API calls (Contact Farlex for instructions).

About

Terminology

Explore the English language with this comprehensive tool. It offers dictionary and thesaurus functions, along with research capabilities to dive deeper into words and phrases. Extend its functionality with custom resources for web and app searches.

Highlights
  • Offline U.S. English dictionary
  • Synonyms, antonyms, and word relations
  • Customizable resources for web and app searches
  • Favorite and create term lists
  • Audio pronunciations
  • Wildcard and spelling suggestions
  • iCloud sync and backup
Features
Read full description

Terminology is a browser for the English language – part dictionary, part thesaurus and part research tool. Terminology makes it easy to explore words and phrases, diving down to more and less specific terms - accessing web resources and other apps for more detail and sharing. More than a dictionary, Terminology can be extended with custom resources to search the Internet and other reference apps – making it a great place to satisfy any of your curiosities. ## DICTIONARY, THESAURUS & SEARCH ## - Offline U.S. English dictionary and word reference with simple, straightforward definitions. Based on the latest version of the Open English WordNet - Definitions, synonyms, antonyms, and deeper word relations such as more and less specific words, part, part of, members, member of, pertains to, and more - Favorite and create lists of terms - Word browsing history - Add your notes to any term - Audio pronunciations - Wildcard (?,*) searching - Spelling suggestions - Fast, reliable iCloud (CloudKit) sync and backup of history, favorites, notes, and resources ## EXTENSIBLE RESOURCES ## Resources provide quick links to look up and search your terms on websites and in other apps. Ready to use resources for popular reference sites like Wikipedia, ChatGPT, Google, IMDb, and more, or create your own with simple URL templates. Get more creative with AI resources to drill down on pre-populated prompts. ## MORE FEATURES ## - Share extension lets you access Terminology from a text selection in any app - Control Center integration for quick search - Spotlight and Handoff support - Great support for Accessibility features like VoiceOver and Dynamic Text. - Shortcuts support ## TERMINOLOGY PRO ## Terminology is always free to use, but you can get more out of the app with a Terminology Pro: * Custom resources * Unlimited term lists * Unlimited notes per term Terminology Pro is a reasonable annual subscription, or a one-time lifetime unlock. ## SUBSCRIPTION DETAILS ## * Payment will be charged to your Apple account at confirmation of purchase * Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period * Automatic renewals will be charged at the same price you were initially charged for the subscription * Subscriptions can be managed or canceled by going to Account Settings on the App Store after purchase Have questions? Email support@agiletortoise.com. Terms: https://agiletortoise.com/terms Privacy Policy: https://agiletortoise.com/privacy-policy

Screenshots

Dictionary and Thesaurus Pro4 screens
Terminology4 screens

Verdict

The call

The clearest difference is price: Terminology at Free against Dictionary and Thesaurus Pro's $9.99. Terminology also leads on update cadence (every 4 weeks vs every 4 months). Dictionary and Thesaurus Pro's advantage is in-app purchases (none vs 2) and review sentiment (87% vs 71%). On rating, ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Terminology is free to download; Dictionary and Thesaurus Pro costs $9.99 up front. Terminology sells 2 in-app purchases, starting at $7.99 per year. Dictionary and Thesaurus Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dictionary and Thesaurus Pro holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 2.6K and 1.1K respectively. Written reviews point the same way: 87% of Dictionary and Thesaurus Pro's written reviews are positive against 71% of Terminology's.

UpkeepUpdate frequency

Dictionary and Thesaurus Pro ships an update every 4 months, Terminology every 4 weeks. Both last shipped on November 1, 2026.

Scorecard7 real differences · 4 level
Dictionary and Thesaurus Pro versus Terminology: the parameters behind the verdict, then further details
ParameterDictionary and Thesaurus ProTerminology
Price$9.99Free — better
Rating4.9 (2.6K ratings) — better4.7 (1.1K ratings)
Positive reviews86.6% of reviews — better71.3% of reviews
Number of ratings2.6K — better1.1K
Update frequencyEvery 4 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#85 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size22 MB101 MB
Age rating4+4+
DeveloperFarlex, Inc.Agile Tortoise

Customer experience

Dictionary and Thesaurus Pro

All ratings2,560 ratings
Positive97.0%
Neutral1.1%
Negative1.9%
Written reviews469 reviews
Positive86.6%
Neutral2.8%
Negative10.7%

Terminology

All ratings1,093 ratings
Positive93.6%
Neutral2.5%
Negative3.9%
Written reviews143 reviews
Positive71.3%
Neutral2.1%
Negative26.6%

User reviews

Dictionary and Thesaurus Pro

From 2.6K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Comprehensive and detailed definitions
  • 💡 Helpful translation and pronunciation features
  • 👍 Useful word games and trivia
  • 👍 Offline mode availability

Room to improve

  • 🐛 Occasional bugs and crashes
  • 🔍 Limited thesaurus functionality
  • 🔍 Lack of customization options
  • 💰 Paid version required to remove ads

Terminology

From 1.1K App Store ratings

What we love

  • 👍 Often used, helpful for finding words
  • 🔍 Precise and detailed definitions
  • 🔗 Integrates well with other apps and services
  • 🔍 Comprehensive dictionary and thesaurus
  • 💻 Works great on both iOS and macOS

Room to improve

  • 💰 Subscription model requires paying to remove ads
  • 🔄 Functionality reduced in recent update
  • 🔍 Some words missing from the dictionary
  • 🔍 Clunky interface and navigation in latest version
  • 🔍 Customization options behind paywall

Bugs and requests

Dictionary and Thesaurus Pro

Reported bugs

3 issues
  • Search function sometimes fails to load definitions
  • Offline mode has fewer word entries than online
  • Occasional sync issues between online and offline data

Requested features

4 requests
  • Add more language dictionaries
  • Improve thesaurus with more synonyms and antonyms
  • Implement flashcard or vocabulary building features
  • Allow users to save custom word lists

Terminology

Reported bugs

3 issues
  • Keyboard does not always appear when tapping search
  • Crashes or freezes on some devices
  • Difficulty adjusting volume for word pronunciations

Requested features

5 requests
  • Add ability to review and manage favorite words
  • Implement quiz or flashcard features for learning new words
  • Improve keyboard integration and shortcuts
  • Add more comprehensive dictionary coverage
  • Provide option to revert to previous app version

In-app purchases

None

Dictionary and Thesaurus Pro

No in-app purchases

2 purchases

Terminology

Subscriptions1
  • Pro - Annual$7.991 Year
One-time1
  • Lifetime$29.99

Questions

Is Dictionary and Thesaurus Pro free?
Dictionary and Thesaurus Pro costs $9.99, with no in-app purchases.
Is Terminology free?
Terminology is free to download, with in-app purchases available.
Which has better reviews, Dictionary and Thesaurus Pro or Terminology?
Dictionary and Thesaurus Pro is rated higher. Dictionary and Thesaurus Pro averages 4.9 out of 5 from 2.6K ratings, while Terminology averages 4.7 from 1.1K ratings.
Do Dictionary and Thesaurus Pro or Terminology have ads?
Neither Dictionary and Thesaurus Pro nor Terminology shows ads.
Which is updated more often, Dictionary and Thesaurus Pro or Terminology?
Dictionary and Thesaurus Pro ships an update every 4 months, and Terminology every 4 weeks. Most recently, Dictionary and Thesaurus Pro was updated on November 1, 2026 and Terminology on November 1, 2026.

Other comparisons