Comparison

Dictionary. 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

Dictionary.

Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.

Highlights
  • Offline dictionary and thesaurus
  • Millions of definitions and synonyms
  • Word of the Day and Idiom of the Day
  • Specialty dictionaries (medical, legal, etc.)
  • Translations into 40+ languages
  • Word games (Spelling Bee, Hangman)
  • In-app word lookup via sharing
Features
Read full description

The only Dictionary and Thesaurus with every word you search for. Plus Word of the Day, free offline dictionary access, and millions of definitions and synonyms from top sources, including: Webster's Dictionary Roget's Thesaurus The American Heritage Dictionary Plus FREE access to: English Offline Dictionary English Offline Thesaurus with synonyms and more Medical Dictionary English Idioms and Slang Dictionary Translations of English into 40+ languages Dozens of other translation options + Much more! The Free Dictionary is like getting 100+ apps in one easy-to-use interface. Rated #1 app in the App Store in the free reference category in 114 countries 2011–2019. (Source: https://www.appannie.com/apps/ios/app/379450383/app-ranking/#device=ipad&type=best-ranks) Here's what you can do with The Free Dictionary app: * Find every word you search for. Clear, accurate definitions from top dictionaries—online and offline. * Find synonyms fast. Free Thesaurus with simple interface makes it easy to find the perfect word. Browse synonyms, antonyms, and related words. * Learn something new every day. Word of the Day Idiom of the Day + Other daily content * Build your vocabulary. Don't just look up words—learn how to use them! Featuring: Audio pronunciations Example sentences Etymologies + More! The perfect dictionary app for word lovers and learners of all levels. * Explore topics in-depth. Multiple specialty dictionaries and encyclopedias: Medical dictionary Legal dictionary Science dictionary Financial dictionary Idioms and Slang dictionary Acronyms and Abbreviations + More! * Play word games. Spelling Bee, Hangman, and more. * See idioms in action. Watch idioms videos inside the app! Featuring animations of words and phrases from the idioms and slang dictionary. * Access dictionaries in 13 other languages. Spanish dictionary and thesaurus French dictionary and thesaurus German dictionary and thesaurus + Italian, Portuguese, Russian, Chinese, and more! * Translate English into Spanish, French, and 40+ languages. Or translate other languages into English. Access dozens of other translation options. * Access dictionaries and encyclopedias from these top publishers with just one search: McGraw-Hill Houghton Mifflin HarperCollins Random House Cambridge University Press + More! Here's why The Free Dictionary is 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. Look up a word just by saying it. * 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 words 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! This is not a trial version—you get everything free and forever. Additional offline dictionaries in other languages are available in the Pro version. Seem too good to be true? The Free Dictionary app has been downloaded tens of millions times across multiple platforms, with top ratings after hundreds of thousands of reviews. Read reviews from real users to see why they say The Free Dictionary is the best dictionary app they've ever used. * For app developers: The Free Dictionary app can be accessed by other apps with API calls (Contact Farlex for instructions).

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

Dictionary.4 screens
Dictionary and Thesaurus Pro4 screens

Verdict

The call

The clearest difference is price: Dictionary. at Free against Dictionary and Thesaurus Pro's $9.99. Dictionary. also leads on ratings volume (15K vs 2.6K). Dictionary and Thesaurus Pro's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, review sentiment, update cadence 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

Dictionary. is free to download; Dictionary and Thesaurus Pro costs $9.99 up front. Dictionary. sells 1 one-off in-app purchase. Dictionary and Thesaurus Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Dictionary. against 4.9 for Dictionary and Thesaurus Pro. That said, the two scores are not equally well evidenced: Dictionary. has 15K ratings behind it against 2.6K, so its average is the more settled of the two. Written reviews are what separate them: 91% of Dictionary.'s written reviews are positive against 87% of Dictionary and Thesaurus Pro's.

UpkeepUpdate frequency

Dictionary. ships an update every 3 months, Dictionary and Thesaurus Pro every 4 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 5 level
Dictionary. versus Dictionary and Thesaurus Pro: the parameters behind the verdict, then further details
ParameterDictionary.Dictionary and Thesaurus Pro
PriceFree — better$9.99
Rating4.8 (15K ratings)4.9 (2.6K ratings) — better
Positive reviews90.7% of reviews — better86.5% of reviews
Number of ratings15K — better2.6K
Update frequencyEvery 3 months — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#78 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size25 MB22 MB
Age rating4+4+
DeveloperFarlex, Inc.Farlex, Inc.

Customer experience

Dictionary.

All ratings14,555 ratings
Positive95.2%
Neutral2.2%
Negative2.7%
Written reviews2,164 reviews
Positive90.7%
Neutral2.7%
Negative6.6%

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

Dictionary.

From 15K App Store ratings

What we love

  • 🚀 Comprehensive and detailed definitions
  • 👍 Helpful thesaurus and translation features
  • 🎮 Fun word games and activities
  • 📚 Vast amount of information beyond just definitions
  • 🔍 Easy to use and navigate

Room to improve

  • 🔍 Cluttered interface with too many ads
  • 🐛 Occasional crashes and bugs
  • 🔍 Difficulty finding specific settings or features
  • 🔋 Drains battery life quickly

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

Dictionary.

Reported bugs

3 issues
  • Frequent login issues and lost user data
  • Inconsistent performance across devices
  • Incorrect or missing definitions for some words

Requested features

4 requests
  • Ability to create and organize custom word lists
  • More advanced vocabulary-building tools
  • Improved audio pronunciation quality
  • Offline access to full dictionary content

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

1 purchases

Dictionary.

One-time1
  • Ad-free upgrade$5.99
None

Dictionary and Thesaurus Pro

No in-app purchases

Questions

Is Dictionary. free?
Dictionary. is free to download, with in-app purchases available.
Is Dictionary and Thesaurus Pro free?
Dictionary and Thesaurus Pro costs $9.99, with no in-app purchases.
Which has better reviews, Dictionary. or Dictionary and Thesaurus Pro?
Dictionary and Thesaurus Pro is rated higher. Dictionary. averages 4.8 out of 5 from 15K ratings, while Dictionary and Thesaurus Pro averages 4.9 from 2.6K ratings.
Do Dictionary. or Dictionary and Thesaurus Pro have ads?
Dictionary. shows ads; Dictionary and Thesaurus Pro does not.
Which is updated more often, Dictionary. or Dictionary and Thesaurus Pro?
Dictionary. ships an update every 3 months, and Dictionary and Thesaurus Pro every 4 months. Most recently, Dictionary. was updated on September 24, 2026 and Dictionary and Thesaurus Pro on September 23, 2026.

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