Best Mono Dictionary Apps

238+ iOS apps curated and reviewed

4.3 avg rating
17 free apps
Updated August 2026

With an average user rating of 4.3★, the mono dictionary category is one of the App Store's strongest. Browse all 238+ apps we track, sorted so the most loved ones surface first.

Compare top Mono Dictionary Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoSep 2026
2Dictionary.Dictionary.Free4.8★ (15K)YesYesSep 2026
3Merriam-Webster Dictionary+Merriam-Webster Dictionary+$9.994.8★ (22K)NoNoSep 2026
4Merriam-Webster DictionaryMerriam-Webster DictionaryFree4.8★ (324K)YesYesSep 2026
5Oxford Dictionary & ThesaurusOxford Dictionary & ThesaurusFree4.6★ (29K)NoYesSep 2026
6American Heritage® DictionaryAmerican Heritage® Dictionary$12.994.7★ (199)NoYesSep 2026
7Dictionary Offline - Dict BoxDictionary Offline - Dict BoxFree4.6★ (12K)YesYesSep 2026
8Persian Dictionary - Dict BoxPersian Dictionary - Dict BoxFree4.8★ (86K)YesYesSep 2026

Top Picks for Mono Dictionary

Dictionary.com: English Words#1

Dictionary.com: English Words by Curiosity Media, Inc.

Dictionary, Thesaurus, Vocab
Editor's Choice
🔍 Reference
4.8😐(328K ratings)
FreeAdsIn-App Purchases
Dictionary.com: English Words screenshot 1
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Dictionary.com: English Words screenshot 5

Access over 2 million trusted definitions and synonyms for English words. Enhance your vocabulary with daily new words, example sentences, and audio pronunciations. This app provides grammar tips and editorial content to deepen your understanding of the English language.

What We Love

  • 🚀 Robust dictionary and thesaurus
  • 🤓 Helpful resources like blogs and articles
  • 💡 Useful word games and puzzles
  • 👍 Easy to use and navigate
  • 🤩 Great for expanding vocabulary

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
  • 🤔 Confusing layout changes and UI issues
  • 🤷‍♀️ Paid features not always working as expected
Dictionary.#2

Dictionary. by Farlex, Inc.

by TheFreeDictionary.com
Strong Contender
🔍 Reference
4.8😊(15K ratings)
FreeAdsIn-App Purchases
Dictionary. screenshot 1
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Dictionary. screenshot 4
Dictionary. screenshot 5

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.

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
Merriam-Webster Dictionary+#3

Merriam-Webster Dictionary+ by Merriam-Webster, Inc.

Premium Ad-free Dictionary
Worth Considering
🔍 Reference
4.8😊(22K ratings)
$9.99
#12in Reference
Merriam-Webster Dictionary+ screenshot 1
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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.

What We Love

  • 👍 Clear and intuitive layout
  • 🚀 Convenient offline access
  • 🔍 Comprehensive word definitions
  • 🔠 Helpful thesaurus and word games
  • 🔊 Useful audio pronunciations

Room to Improve

  • 🐛 Frequent app freezes and crashes
  • ⚠️ Missing words and incomplete definitions
  • 🔍 Lack of spell-check and word suggestions
  • 🔍 Limited search functionality
  • 🔀 Difficulty navigating back to previous words

More Mono Dictionary apps to explore

FAQ about Mono Dictionary

What are the best mono dictionary apps for iPhone?
Dictionary.com: English Words tops our mono dictionary apps ranking as of August 2026, with a 4.8-star average from 328K App Store ratings, and it's free to download.
Yes — 17 of the top mono dictionary apps we rank are free to download, including Dictionary.com: English Words and Dictionary..
Dictionary.com: English Words shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 238+ mono dictionary apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app serves as a comprehensive English dictionary and thesaurus, offering over 2 million trusted definitions and synonyms. It aims to help users improve their English vocabulary, understanding, and writing skills through various features.
Key features include access to millions of definitions and synonyms, a 'Word of the Day' to expand vocabulary, example sentences to show word usage, audio pronunciations, grammar tips, and a search history to track learned words.