Best Definitions Apps

240+ iOS apps curated and reviewed

2.3 avg rating
20 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our definitions list covers 240+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Definitions Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoNov 2026
2Merriam-Webster DictionaryMerriam-Webster DictionaryFree4.8★ (331K)YesYesNov 2026
3Vocabulary - Learn words dailyVocabulary - Learn words dailyFree4.8★ (223K)YesYesNov 2026
4Biology Dictionary - Terms DefinitionsBiology Dictionary - Terms DefinitionsFree1.0★ (1)NoNoMay 2026
5Journalism Dictionary Terms DefinitionsJournalism Dictionary Terms DefinitionsFree1.0★ (1)NoNoMay 2026
6Architecture Dictionary -Terms DefinitionsArchitecture Dictionary -Terms DefinitionsFree1.0★ (2)NoNoMay 2026
7Psychology Dictionary Definitions TermsPsychology Dictionary Definitions TermsFree1.2★ (9)NoNoOct 2026
8Geology Dictionary Terms DefinitionsGeology Dictionary Terms DefinitionsFree1.3★ (7)NoNoOct 2026

Top Picks for Definitions

Dictionary.com: English Words#1

Dictionary.com: English Words by Curiosity Media

Dictionary, Thesaurus, Vocab
Editor's Choice
🔍 Reference
4.8😐(328K ratings)
FreeAds
Dictionary.com: English Words screenshot 1
Dictionary.com: English Words screenshot 2
Dictionary.com: English Words screenshot 3
Dictionary.com: English Words screenshot 4
Dictionary.com: English Words screenshot 5

Access over 2 million definitions and synonyms to enhance your English vocabulary. This app offers daily new words, example sentences, idioms, rhymes, and audio pronunciations. Improve your writing with grammar tips and explore word origins.

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
4.8😊(331K ratings)
FreeAdsIn-App Purchases
#49in Reference
Merriam-Webster Dictionary screenshot 1
Merriam-Webster Dictionary screenshot 2
Merriam-Webster Dictionary screenshot 3
Merriam-Webster Dictionary screenshot 4

Access America's most respected dictionary, updated with new words and meanings. This app offers offline access, voice search, daily vocabulary challenges, and a thesaurus. It's designed for English language reference, education, and vocabulary enhancement.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive definitions
  • 👍 Helpful thesaurus
  • 🚀 Offline access
  • 👍 Word of the day feature
  • 👍 Fun word games

Room to Improve

  • 🐛 Ads can be intrusive
  • 🐛 Difficulty closing ads
  • 🐛 Repetitive game questions
  • 🐛 Missing words in dictionary
  • 🐛 Unreasonable level progression in games
Vocabulary - Learn words daily#3

Vocabulary - Learn words daily by Monkey Taps

Word of the day widget & games
Worth Considering
📚 Education
4.8😊(223K ratings)
FreeAdsIn-App Purchases
#25in Education
Vocabulary - Learn words daily screenshot 1
Vocabulary - Learn words daily screenshot 2
Vocabulary - Learn words daily screenshot 3
Vocabulary - Learn words daily screenshot 4
Vocabulary - Learn words daily screenshot 5
Vocabulary - Learn words daily screenshot 6

Expand your vocabulary with daily word learning and engaging games. This app helps you sound more articulate by introducing new words in a stimulating way, making learning fun and effective. Achieve your linguistic goals at your own pace and customize features to suit your needs.

What We Love

  • 👍 Beautiful app design
  • 🔊 Pronunciation feature
  • 📚 Wide range of vocabulary
  • 🔖 Ability to bookmark words
  • 🔧 Customizable app appearance
  • 🔔 Useful daily notifications
  • 🏆 Helps improve writing and speaking

Room to Improve

  • 🐛 Pronunciation issues and mismatched IPA
  • 🔍 Limited search functionality
  • 🔢 Too many words per day
  • 🕰️ Inconsistent notification timing
  • 💰 Paywall for advanced features
  • 🤖 Robotic text-to-speech voices
  • 🤔 Questionable example sentences

More Definitions apps to explore

FAQ about Definitions

What are the best definitions apps for iPhone?
Dictionary.com: English Words tops our definitions apps ranking as of November 2026, with a 4.8-star average from 328K App Store ratings, and it's free to download.
Yes — 20 of the top definitions apps we rank are free to download, including Dictionary.com: English Words and Merriam-Webster Dictionary.
Dictionary.com: English Words shows ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 240+ definitions apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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