Comparison

Merriam 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

Merriam

Access America's leading dictionary with over 15,000 extra entries for people and places. Enjoy offline access, voice search, and daily vocabulary builders. This app offers expert word guidance with a thesaurus and example sentences.

Highlights
  • Ad-free experience
  • 15,000+ premium entries
  • Offline dictionary access
  • Voice search functionality
  • Daily Word of the Day
  • Vocabulary-building word games
  • Integrated thesaurus
Features
Read full description

Get America's most useful and respected dictionary, optimized for your iPhone, iPad, and Apple Watch. Continuously updated with the newest words and meanings, this is the premier iOS app for English language reference, education, and vocabulary building. Key Features: * No ads! * Premium Content: Over 15,000 additional entries covering people and places * Offline access: Complete access to definitions and synonyms whether or not you're connected * Voice Search: look up a word without having to spell it * Word of the Day: learn a new word every day * Word Games: fun, fast quizzes to test your vocabulary * Favorite Words and Search History: keep track of the words that are most important to you * Favorite Word Syncing Through iCloud: share your favorites between devices and on the Web * For Tablets: browse the entire dictionary with a scrolling index * Apple Watch Extension: see the Word of the Day and find watch-sized definitions with voice search Expert Word Guidance: * Integrated Thesaurus: more than 200,000 word choices with examples of their use * Example Sentences: understand how a word is used in context * Audio Pronunciations: voiced by real English speakers, not text-to-speech robots Terms of Use: https://www.merriam-webster.com/terms-of-use

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

Merriam4 screens
Collins Dictionary+Thesaurus4 screens

Verdict

The call

The clearest difference is rating: Merriam at 4.8 against Collins Dictionary+Thesaurus's 3.9. Merriam also leads on in-app purchases (none vs 1) and ratings volume (22K vs 15). Collins Dictionary+Thesaurus's advantage is price ($6.99 vs $9.99) and iOS requirement (13.0 vs 15.0). On update cadence, ads, monetization model 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

Merriam costs $9.99 and Collins Dictionary+Thesaurus $6.99 up front. Collins Dictionary+Thesaurus sells 1 one-off in-app purchase. Merriam asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Merriam holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Merriam has 22K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 82% of Merriam's written reviews are positive against 72% of Collins Dictionary+Thesaurus's.

UpkeepUpdate frequency

Merriam ships an update every 5 months, Collins Dictionary+Thesaurus every 6 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 4 level
Merriam versus Collins Dictionary+Thesaurus: the parameters behind the verdict, then further details
ParameterMerriamCollins Dictionary+Thesaurus
Price$9.99$6.99 — better
Rating4.8 (22K ratings) — better3.9 (15 ratings)
Positive reviews82.0% of reviews — better72.0% of reviews
Number of ratings22K — better15
Update frequencyEvery 5 months — betterEvery 6 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#6 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size238 MB429 MB
Age rating12+4+
DeveloperMerriam-Webster, Inc.HarperCollins Publishers Ltd

Customer experience

Merriam

All ratings22,135 ratings
Positive97.5%
Neutral1.2%
Negative1.2%
Written reviews517 reviews
Positive82.0%
Neutral6.2%
Negative11.8%

Collins Dictionary+Thesaurus

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

Bugs and requests

Merriam

Reported bugs

4 issues
  • App freezes and crashes on launch
  • Audio pronunciations not working in some cases
  • Inconsistent performance across iOS versions
  • Syncing issues between devices

Requested features

5 requests
  • Improved search with spell-check and suggestions
  • Ability to mark and review words
  • Integration with system search and Siri
  • Support for landscape mode and dark mode
  • Expanded word coverage and more detailed definitions

Collins Dictionary+Thesaurus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Merriam

No in-app purchases

1 purchases

Collins Dictionary+Thesaurus

One-time1
  • Headword Audio PackFree

Questions

Is Merriam free?
Merriam 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, Merriam or Collins Dictionary+Thesaurus?
Merriam is rated higher. Merriam averages 4.8 out of 5 from 22K ratings, while Collins Dictionary+Thesaurus averages 3.9 from 15 ratings.
Do Merriam or Collins Dictionary+Thesaurus have ads?
Neither Merriam nor Collins Dictionary+Thesaurus shows ads.
Which is updated more often, Merriam or Collins Dictionary+Thesaurus?
Merriam ships an update every 5 months, and Collins Dictionary+Thesaurus every 6 months. Most recently, Merriam was updated on October 30, 2026 and Collins Dictionary+Thesaurus on October 29, 2026.

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