Comparison

Thesaurus App vs Dictionary and Thesaurus Pro

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

Head to head
About

Thesaurus App

Instantly find synonyms for any word. Explore antonyms, related terms, and user-suggested words. Tap results for new searches and access your search history.

Highlights
  • Synonym retrieval
  • Antonym search
  • Related terms
  • User suggestions
  • Quick new search
  • Search history
Features
Read full description

Retrieve the synonym for every word. If available you will get antonyms, related terms, similar word and user suggestions too. Tap one of the results to start a quick new search for that term. It keeps a history list of your search terms as well. Runs on the Apple Watch and supports the iPad multitasking mode (split-view) on iOS9.

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).

Screenshots

Thesaurus App4 screens
Dictionary and Thesaurus Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Dictionary and Thesaurus Pro at 87% against Thesaurus App's 29%. Dictionary and Thesaurus Pro also leads on rating (4.9 vs 1.0) and ratings volume (2.6K vs 4). Thesaurus App's advantage is price ($0.99 vs $9.99) and iOS requirement (9.0 vs 13.0). On ads, in-app purchases 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

Thesaurus App costs $0.99 and Dictionary and Thesaurus Pro $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Dictionary and Thesaurus Pro holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Dictionary and Thesaurus Pro has 2.6K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 29% of Thesaurus App's written reviews are positive against 87% of Dictionary and Thesaurus Pro's.

UpkeepUpdate frequency

Thesaurus App ships an update every 8 months, Dictionary and Thesaurus Pro every 4 months. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard8 real differences · 3 level
Thesaurus App versus Dictionary and Thesaurus Pro: the parameters behind the verdict, then further details
ParameterThesaurus AppDictionary and Thesaurus Pro
Price$0.99 — better$9.99
Rating1.0 (4 ratings)4.9 (2.6K ratings) — better
Positive reviews28.6% of reviews86.5% of reviews — better
Number of ratings42.6K — better
Update frequencyEvery 8 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#176 — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size2 MB22 MB
Age rating4+4+
DeveloperPiet JonasFarlex, Inc.

Customer experience

Thesaurus App

All ratings4 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews56 reviews
Positive28.6%
Neutral12.5%
Negative58.9%

Dictionary and Thesaurus Pro

All ratings2,560 ratings
Positive97.0%
Neutral1.1%
Negative1.9%
Written reviews468 reviews
Positive86.5%
Neutral2.8%
Negative10.7%

User reviews

Thesaurus App

From 4 App Store ratings

What we love

  • 👍 Easy to use for searching words
  • 🚀 Fast and excellent thesaurus
  • 👍 Works well and is well supported
  • 👍 Great for homework and writing
  • 👍 Helpful for vocabulary building

Room to improve

  • 👎 Limited synonyms
  • 👎 No antonyms provided
  • 👎 Few applicable synonyms
  • 👎 Narrow search results
  • 👎 Small text, cannot be enlarged

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

Bugs and requests

Thesaurus App

Reported bugs

14 issues
  • Cannot cancel subscription
  • Never downloaded/appeared on phone
  • Creator impossible to reach
  • Stuck in update limbo
  • Draining battery and internet connection
Show 9 more
  • Print too small, cannot be enlarged
  • Page full of advertisements
  • Many words not in the app
  • No offline use found
  • History not deletable
  • Requires WiFi to use
  • Slow performance and time-outs
  • Does not work offline
  • List of synonyms limited and sometimes wrong

Requested features

13 requests
  • Provide antonyms
  • Include similar terms and related word forms
  • Allow following a chain of related terms
  • Improve synonym suggestions
  • Allow text enlargement
Show 8 more
  • Remove advertisements
  • Include antonym finder
  • Provide explanations of synonym differences
  • Offline functionality
  • Expand word bank
  • Improve performance
  • Allow history deletion
  • Update app to fix issues

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

In-app purchases

None

Thesaurus App

No in-app purchases

None

Dictionary and Thesaurus Pro

No in-app purchases

Questions

Is Thesaurus App free?
Thesaurus App costs $0.99, with no in-app purchases.
Is Dictionary and Thesaurus Pro free?
Dictionary and Thesaurus Pro costs $9.99, with no in-app purchases.
Which has better reviews, Thesaurus App or Dictionary and Thesaurus Pro?
Dictionary and Thesaurus Pro is rated higher. Thesaurus App averages 1.0 out of 5 from 4 ratings, while Dictionary and Thesaurus Pro averages 4.9 from 2.6K ratings.
Do Thesaurus App or Dictionary and Thesaurus Pro have ads?
Neither Thesaurus App nor Dictionary and Thesaurus Pro shows ads.
Which is updated more often, Thesaurus App or Dictionary and Thesaurus Pro?
Thesaurus App ships an update every 8 months, and Dictionary and Thesaurus Pro every 4 months. Most recently, Thesaurus App was updated on September 21, 2026 and Dictionary and Thesaurus Pro on September 23, 2026.

Other comparisons