Comparison

Dictionary and Thesaurus Pro vs Collins Dictionary+Thesaurus

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

Collins Dictionary+Thesaurus

Access a comprehensive English dictionary and thesaurus with over 722,000 words, meanings, and phrases, plus 410,000 synonyms and antonyms. This offline app includes pronunciation audio, usage notes, etymologies, and specialized vocabulary for writers, students, and word game enthusiasts.

Highlights
  • Extensive vocabulary (722k+ words, 410k+ synonyms)
  • Offline access with pronunciation audio
  • Crossword and Scrabble solver features
  • Latest words and technical vocabulary
  • Usage notes and etymologies
  • Search within entries and definitions
  • Custom actions for use in other apps
Features
Read full description

The new 2014 Collins English Dictionary and Thesaurus app is fast, easy-to-use, has all the latest words, and is the most comprehensive and trustworthy combined English Dictionary and Thesaurus available on iOS. It contains more than 722,000 words, meanings and phrases and 410,000 synonyms and antonyms reflecting the rapid evolution and growth of modern English. No internet connection is required. Pronunciation audio available offline. For more than a century, Collins’ editors have worked to create dictionaries that meet the needs of the world they define. They’re still doing so today, tracking language change around the world and vetting suggestions from the public on collinsdictionary.com, ensuring Collins English Dictionary and Thesaurus truly is the home of living language. With all of the latest words to enter the English language as well as over 8,500 place names and 5,500 biographies you have thousands of fascinating facts and figures at your fingertips. Usage notes give advice on using the right word in the right place, and thousands of etymologies trace the roots of modern English. *More than 722,000 words, meanings and phrases *Over 410,000 synonyms and antonyms *Pronunciation audio available *Literary and rare words useful for crossword solvers and setters as well as Scrabble players *Includes the latest new words and extensive coverage of scientific and technical vocabulary *Over 8,500 place names and 5,500 biographies *Full appendixes of the Collins English Dictionary (The Joy of Dictionaries by best-selling author Mark Forsyth, Guide to Using the Dictionary, Pronunciation Guide and Abbreviations) *No internet connection required Search features include: -Alphabetical listing -Spelling suggestions -Linked Dictionary and Thesaurus -Anagrams -Fast pattern-match search (*, ?, vowel, consonant and group of letters) for crossword solving -Customize search options (starts/ends with, appears in idioms/examples) -Search within entries, definitions and examples -‘Jump’ feature – touch any word anywhere in the dictionary to go to the definition -Custom action feature allows users to look up a word in the dictionary from within other applications -Bookmark and history functions

Screenshots

Dictionary and Thesaurus Pro4 screens
Collins Dictionary+Thesaurus4 screens

Verdict

The call

The clearest difference is rating: Dictionary and Thesaurus Pro at 4.9 against Collins Dictionary+Thesaurus's 3.9. Dictionary and Thesaurus Pro also leads on in-app purchases (none vs 1) and ratings volume (2.6K vs 15). Collins Dictionary+Thesaurus's advantage is price ($6.99 vs $9.99). On update cadence, ads, device support and iOS requirement 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

Dictionary and Thesaurus Pro costs $9.99 and Collins Dictionary+Thesaurus $6.99 up front. Collins Dictionary+Thesaurus sells 1 one-off in-app purchase. 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 3.9. That said, the two scores are not equally well evidenced: Dictionary and Thesaurus Pro has 2.6K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 87% of Dictionary and Thesaurus Pro's written reviews are positive against 72% of Collins Dictionary+Thesaurus's.

UpkeepUpdate frequency

Dictionary and Thesaurus Pro ships an update every 4 months, Collins Dictionary+Thesaurus every 6 months. Both last shipped on October 29, 2026.

Scorecard7 real differences · 4 level
Dictionary and Thesaurus Pro versus Collins Dictionary+Thesaurus: the parameters behind the verdict, then further details
ParameterDictionary and Thesaurus ProCollins Dictionary+Thesaurus
Price$9.99$6.99 — better
Rating4.9 (2.6K ratings) — better3.9 (15 ratings)
Positive reviews86.6% of reviews — better72.0% of reviews
Number of ratings2.6K — better15
Update frequencyEvery 4 months — betterEvery 6 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#111 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size22 MB429 MB
Age rating4+4+
DeveloperFarlex, Inc.HarperCollins Publishers Ltd

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%

Collins Dictionary+Thesaurus

All ratings15 ratings
Positive66.7%
Neutral6.7%
Negative26.7%
Written reviews50 reviews
Positive72.0%
Neutral4.0%
Negative24.0%

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

Collins Dictionary+Thesaurus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Dictionary and Thesaurus Pro

No in-app purchases

1 purchases

Collins Dictionary+Thesaurus

One-time1
  • Headword Audio PackFree

Questions

Is Dictionary and Thesaurus Pro free?
Dictionary and Thesaurus Pro costs $9.99, with no in-app purchases.
Is Collins Dictionary+Thesaurus free?
Collins Dictionary+Thesaurus costs $6.99, and also offers in-app purchases.
Which has better reviews, Dictionary and Thesaurus Pro or Collins Dictionary+Thesaurus?
Dictionary and Thesaurus Pro is rated higher. Dictionary and Thesaurus Pro averages 4.9 out of 5 from 2.6K ratings, while Collins Dictionary+Thesaurus averages 3.9 from 15 ratings.
Do Dictionary and Thesaurus Pro or Collins Dictionary+Thesaurus have ads?
Neither Dictionary and Thesaurus Pro nor Collins Dictionary+Thesaurus shows ads.
Which is updated more often, Dictionary and Thesaurus Pro or Collins Dictionary+Thesaurus?
Dictionary and Thesaurus Pro ships an update every 4 months, and Collins Dictionary+Thesaurus every 6 months. Most recently, Dictionary and Thesaurus Pro was updated on October 29, 2026 and Collins Dictionary+Thesaurus on October 29, 2026.

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