Comparison

Collins 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

Collins

This comprehensive French-English dictionary offers extensive vocabulary, verb conjugations, and usage notes. It provides smart search functionality, offline access, and text-to-speech for pronunciation. Ideal for students and language professionals needing a reliable reference tool.

Highlights
  • 57,000 headwords and 190,000 translations
  • 90,000+ example phrases
  • Full verb conjugations
  • Hundreds of usage notes
  • No internet connection required
  • Smart search with misspelling correction
  • Text-to-speech pronunciation
Features
Read full description

57,000 headwords and more than 190,000 translations • more than 90,000 phrases • full conjugations for thousands of French and English verbs • hundreds of usage notes and examples • no internet connection required Carry a dependable French and English reference everywhere you go with the latest edition of the Collins Pro French-English Translation Dictionary. This app combines detailed, professional dictionary data from HarperCollins and Le Robert with our new, easy-to-use Ultralingua interface. Our smart search goes beyond dictionary entries to give you complete conjugations of thousands of verbs in all standard forms, convert numerals into French or English text instantly, and catch common misspellings to get you to the word you are looking for faster than ever. DICTIONARY: • Over 57,000 entries with 190,000 translations • Over 90,000 example phrases • Tap-and-hold any word or phrase and choose "Speak" from the popup menu to hear that word spoken using Apple's built-in text-to-speech feature. • Genders for all French nouns • Idioms, slang, technical language, and regional differences in spelling and usage • Hundreds of usage notes about troublesome constructions • Dozens of cultural notes • Smart search results in both French and English simultaneously, in case you misspell or mistype • Search-as-you-go displays words and narrows your selection as you type • Tap on a word in a definition to quickly look it up, conjugate it, or copy it to your clipboard. This features recognizes inflected forms and chooses the correct language for you. • Search the dictionary by speaking to Apple’s Siri on applicable devices VERBS: • Conjugations for thousands of French and English verbs • Includes all standard tenses and forms • Displays the direct translation of each conjugation when available • Smart search finds infinitives and catches misspellings • View verb conjugations in a single tense or expand a verb to view all conjugations in one user-friendly format MORE: • Translates numerals into French and English text as you type • Language swapper button to switch from French-English to English-French with ease • Tap the history button to view the 50 most recent dictionary definitions, verb conjugations, and more in one place. Sort the list alphabetically or by date, and choose to clear the list completely or delete one entry at a time. • Favorite individual definitions and verbs and view them by tapping on the favorites button. • No internet connection required • Change your device settings to view the app display in English, Spanish, French, Italian, Portuguese, or German This universal app will run on iPad, iPhone, and iPod touch, so you can purchase it once and load it onto all your devices. The iPad and iPhone/iPod touch versions look and behave differently to give you a great experience on every device you own. The Collins Robert Concise French Dictionary is a must-have reference tool for students and language professionals alike. REVIEWS: (5 stars) "Best French dictionary ever - In the 30 years that I have been studying and using French I have yet to find a better French-English dictionary, whether in-print, online or an app. This app is totally worth the price." -User review (5 stars) "Wonderful for an high intermediate reader like me who often needs a clarification but doesn't want to haul around a heavy dictionary. The interface is great because it anticipates the word as you type and if your French spelling is weak - like mine is - it saves a lot of time." -User review Follow us on Twitter and become a fan on Facebook for app news, language learning tips, and more: http://www.twitter.com/ultralingua http://on.fb.me/ifI8Hy

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

Collins4 screens
Dictionary and Thesaurus Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Dictionary and Thesaurus Pro at 87% against Collins's 60%. Dictionary and Thesaurus Pro also leads on price ($9.99 vs $14.99) and rating (4.9 vs 4.7). On update cadence, ads, in-app purchases and monetization model 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

Collins costs $14.99 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 4.7. Both are backed by a comparable volume of ratings — 635 and 2.6K respectively. Written reviews point the same way: 60% of Collins's written reviews are positive against 87% of Dictionary and Thesaurus Pro's.

UpkeepUpdate frequency

Collins ships an update every 5 months, Dictionary and Thesaurus Pro every 4 months. Both last shipped on September 28, 2026.

Scorecard6 real differences · 5 level
Collins versus Dictionary and Thesaurus Pro: the parameters behind the verdict, then further details
ParameterCollinsDictionary and Thesaurus Pro
Price$14.99$9.99 — better
Rating4.7 (635 ratings)4.9 (2.6K ratings) — better
Positive reviews59.8% of reviews86.5% of reviews — better
Number of ratings6352.6K — better
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#36 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.613.0 — better
Further details — not scored
Size18 MB22 MB
Age rating4+4+
DeveloperUltralingua, Inc.Farlex, Inc.

Customer experience

Collins

All ratings635 ratings
Positive93.7%
Neutral3.3%
Negative3.0%
Written reviews333 reviews
Positive59.8%
Neutral9.0%
Negative31.2%

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

Collins

From 635 App Store ratings

What we love

  • 🚀 Easy to use
  • 🚀 Comprehensive dictionary
  • 🚀 Excellent verb conjugations
  • 🚀 Offline availability
  • 👍 Detailed definitions and examples

Room to improve

  • 🐛 Crashes and bugs after updates
  • 🐛 Missing common words and expressions
  • 🔍 Difficult to navigate and search
  • 💰 Expensive for an app
  • 🔍 Clunky interface

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

Collins

Reported bugs

3 issues
  • Keyboard and display issues after updates
  • Incorrect verb conjugations
  • Inability to search for conjugated forms

Requested features

5 requests
  • Audio pronunciations
  • Ability to save/review words
  • Improved search and navigation
  • Expanded vocabulary coverage
  • Night mode option

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

Collins

No in-app purchases

None

Dictionary and Thesaurus Pro

No in-app purchases

Questions

Is Collins free?
Collins costs $14.99, 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, Collins or Dictionary and Thesaurus Pro?
Dictionary and Thesaurus Pro is rated higher. Collins averages 4.7 out of 5 from 635 ratings, while Dictionary and Thesaurus Pro averages 4.9 from 2.6K ratings.
Do Collins or Dictionary and Thesaurus Pro have ads?
Neither Collins nor Dictionary and Thesaurus Pro shows ads.
Which is updated more often, Collins or Dictionary and Thesaurus Pro?
Collins ships an update every 5 months, and Dictionary and Thesaurus Pro every 4 months. Most recently, Collins was updated on September 28, 2026 and Dictionary and Thesaurus Pro on September 28, 2026.

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