Comparison

Chambers Thesaurus 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

Chambers Thesaurus

This offline English thesaurus offers a vast collection of synonyms and antonyms for writers and language enthusiasts. It features intelligent word entry with spelling suggestions and advanced search capabilities, all accessible without an internet connection.

Highlights
  • Nearly 40,000 indexed words
  • 400,000 synonyms and antonyms
  • Intelligent spelling suggestions
  • Sounds-like and confused word suggestions
  • Fast pattern-matching search
  • Cross-reference to dictionaries
  • Offline access
Features
Read full description

The Chambers Thesaurus is the perfect reference for writers and word game enthusiasts, while all lovers of language will find it a pleasure to browse through. There are nearly 40 000 distinct indexed words, and a total of about 400 000 synonyms and antonyms. The intelligent word entry suggests possible correct spellings as you type, as well as listing words that sound the same or are often confused. Search features include: - Alphabetical listing - Spelling suggestions - Sounds-like and often-confused - Fast pattern-matching search - Cross-reference to offline and online dictionaries There are also standard bookmark, recent word and random word features. On newer iPads it supports Split View and Slide Over for easily viewing with other apps. With iOS 13+ it supports dark mode. No Internet connection is required. The Chambers Dictionary is also available as a separate app, and can easily be cross-referenced using the X-Ref button. Our WordWeb, Chambers and Oxford dictionaries are also available separately for Windows and Mac desktop (Collins coming soon).

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

Chambers Thesaurus4 screens
Dictionary and Thesaurus Pro4 screens

Verdict

The call

The clearest difference is ratings volume: Dictionary and Thesaurus Pro at 2.6K against Chambers Thesaurus's 11. Dictionary and Thesaurus Pro also leads on chart position (#187 vs unranked) and review sentiment (87% vs 77%). Chambers Thesaurus's advantage is price ($4.99 vs $9.99). On rating, update cadence, ads and in-app purchases 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

Chambers Thesaurus costs $4.99 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

On the App Store both sit at effectively the same score — 4.9 for Chambers Thesaurus against 4.9 for Dictionary and Thesaurus Pro. That said, the two scores are not equally well evidenced: Dictionary and Thesaurus Pro has 2.6K ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 77% of Chambers Thesaurus's written reviews are positive against 87% of Dictionary and Thesaurus Pro's.

UpkeepUpdate frequency

Chambers Thesaurus ships an update every 8 months, Dictionary and Thesaurus Pro every 4 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 6 level
Chambers Thesaurus versus Dictionary and Thesaurus Pro: the parameters behind the verdict, then further details
ParameterChambers ThesaurusDictionary and Thesaurus Pro
Price$4.99 — better$9.99
Rating4.9 (11 ratings) — better4.9 (2.6K ratings)
Positive reviews76.7% of reviews86.6% of reviews — better
Number of ratings112.6K — better
Update frequencyEvery 8 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#187 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.513.0 — better
Further details — not scored
Size18 MB22 MB
Age rating4+4+
DeveloperAntony LewisFarlex, Inc.

Customer experience

Chambers Thesaurus

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews86 reviews
Positive76.7%
Neutral4.7%
Negative18.6%

Dictionary and Thesaurus Pro

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

User reviews

Chambers Thesaurus

From 11 App Store ratings

What we love

  • 👍 Excellent tool overall
  • 📚 Comprehensive vocabulary
  • ✍️ Great for writers
  • crossword Perfect for crosswords
  • 💰 Good value for money

Room to improve

  • ❓ Incomplete vocabulary (missing common words)
  • 🔗 Faulty linking between words
  • 🐛 App crashes after updates
  • 💻 Not working on newer OS versions
  • 🖱️ Faulty interface (search field not immediate)

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

Chambers Thesaurus

Reported bugs

6 issues
  • App crashes when opening after update
  • App no longer works on older OS versions
  • Search field not immediately available
  • Latest update prevents download on iPhone
  • Index broken, making it less useful
Show 1 more
  • Search only for headwords, not synonyms or sub-collections

Requested features

8 requests
  • Switch between purchased dictionaries/thesauruses in tabs
  • Sell other desktop dictionaries on mobile
  • Consistent spacing and text placement across tabs
  • Use MacOS built-in support for graphics card acceleration
  • Display identifying headings ('Thesaurus'/'Dictionary')
Show 3 more
  • Allow changing background and text color for dyslexia
  • Update to the 3rd edition thesaurus
  • Visibly differentiate words with links

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

Chambers Thesaurus

No in-app purchases

None

Dictionary and Thesaurus Pro

No in-app purchases

Questions

Is Chambers Thesaurus free?
Chambers Thesaurus costs $4.99, 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, Chambers Thesaurus or Dictionary and Thesaurus Pro?
Chambers Thesaurus is rated higher. Chambers Thesaurus averages 4.9 out of 5 from 11 ratings, while Dictionary and Thesaurus Pro averages 4.9 from 2.6K ratings.
Do Chambers Thesaurus or Dictionary and Thesaurus Pro have ads?
Neither Chambers Thesaurus nor Dictionary and Thesaurus Pro shows ads.
Which is updated more often, Chambers Thesaurus or Dictionary and Thesaurus Pro?
Chambers Thesaurus ships an update every 8 months, and Dictionary and Thesaurus Pro every 4 months. Most recently, Chambers Thesaurus was updated on November 1, 2026 and Dictionary and Thesaurus Pro on November 5, 2026.

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