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Best Study Dictionary Apps

220+ iOS apps curated and reviewed

4.7 avg rating
18 free apps
Updated June 2026

With an average user rating of 4.7★, the study dictionary category is one of the App Store's strongest. Browse all 220+ apps we track, sorted so the most loved ones surface first.

Top Picks for Study Dictionary

Dictionary.com: English Words#1

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

Dictionary, Thesaurus, Vocab
Editor's Choice
🔍 Reference
4.7😐(19K ratings)
FreeAdsIn-App Purchases
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
Dictionary.com: English Words screenshot 6

Access the ultimate English language learning app packed with quizzes, games, and over 2 million definitions and synonyms. Enhance your vocabulary with word puzzles and daily challenges, enjoy dark mode, offline access, voice search, and more. Improve your English skills effortlessly!

What We Love

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

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
Merriam-Webster Dictionary#2

Merriam-Webster Dictionary by Merriam-Webster, Inc.

Strong Contender
🔍 Reference
4.8😊(320K ratings)
FreeAdsIn-App Purchases
#45in Reference
Merriam-Webster Dictionary screenshot 1
Merriam-Webster Dictionary screenshot 2
Merriam-Webster Dictionary screenshot 3
Merriam-Webster Dictionary screenshot 4

Access a premier iOS app for English language reference, education, and vocabulary building, with new word games and quizzes for learning. Features universal access, offline capabilities, voice search, daily word learning, thesaurus, example sentences, and pronunciations by real speakers. Enjoy features like favorite word syncing and Apple Watch integration. Subscribe to remove ads and access extra resources. Manage your subscription easily. Terms of Use: [Link to Terms of Use].

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive definitions
  • 👍 Helpful thesaurus
  • 🚀 Offline access

Room to Improve

  • 🐛 Ads can be intrusive
  • 🐛 Difficulty closing ads
  • 🐛 Repetitive game questions
Merriam-Webster Dictionary+#3

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

Premium Ad-free Dictionary
Worth Considering
🔍 Reference
4.8😊(22K ratings)
$9.99Ads
#17in Reference
Merriam-Webster Dictionary+ screenshot 1
Merriam-Webster Dictionary+ screenshot 2
Merriam-Webster Dictionary+ screenshot 3
Merriam-Webster Dictionary+ screenshot 4

Access a premium ad-free dictionary app for iPhone, iPad, and Apple Watch with offline capabilities, new word games, and features like integrated thesaurus, vocabulary-building quizzes, voice search, and word of the day. Perfect for English language reference and vocabulary building. Find out more by checking the Application License Agreement and App Privacy Policy.

What We Love

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

Room to Improve

  • 🐛 Frequent app freezes and crashes
  • ⚠️ Missing words and incomplete definitions
  • 🔍 Lack of spell-check and word suggestions

More Study Dictionary apps to explore

4
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Thesaurus & Offline Vocabulary
Free

Access one of the highest authorities in language reference with the power of 15 major Oxford dictionaries at your fingertips. Explore advanced search and learning tools for a comprehensive linguistic experience.

🔍 Reference
(28K)
5
Dictionary & Translator
Dictionary & Translator
Dictionary & Translator
Learn and Translate Languages
Free

A versatile application offering an extensive database of words, meanings, and synonyms. Users can easily look up definitions, translations, and related terms with a user-friendly interface. Try it out for quick and accurate word references!

📚 Education
(12K)
6
Bible Dictionary and Glossary
Bible Dictionary and Glossary
Bible Dictionary and Glossary
Webster Easton Smith Vine Nave
Free

Explore a comprehensive Bible Dictionary and Glossary offering insights from Webster, Easton, Smith, Vine, and more to enhance your understanding of biblical texts with in-depth definitions, cross-references, and concordance features. Unlock the richness of biblical knowledge with this valuable resource.

🔍 Reference
(4.9K)
7
Japanese Dictionary - Nihongo
Japanese Dictionary - Nihongo
Japanese Dictionary - Nihongo
Kanji, kana, vocab and grammar
Free

Discover a comprehensive Japanese language app offering a dictionary, flashcards, and reading assistance features to enhance your learning experience. Access a vast database of words, examples, and kanji entries along with unique features like clippings for easier reading and personalized flashcards. Experience a powerful tool supported by JMDict and Tatoeba projects to excel in your Japanese studies. Start your language journey today!

🔍 Reference
(1.8K)
8
Vietnamese Dictionary PEnglish
Vietnamese Dictionary PEnglish
Vietnamese Dictionary PEnglish
English Vietnamese Dictionary
Free

Access a comprehensive and innovative English-Vietnamese dictionary app with offline accessibility and advanced search features for free on the Appstore. Perfect for quick translations on-the-go!

📚 Education
(18K)
9
Dictionary Offline - Dict Box
Dictionary Offline - Dict Box
Dictionary Offline - Dict Box
Dictionary for All Languages
Free

Discover a comprehensive offline dictionary app for all languages with Dict Box. Access definitions, translations, and synonyms on-the-go. Download now for quick and easy language reference.

🔍 Reference
(11K)
10
Dictionary.
Dictionary.
Dictionary.
by TheFreeDictionary.com
Free

Discover a comprehensive Dictionary and Thesaurus app with a Word of the Day feature, offline access, and resources from top sources. Access millions of definitions, synonyms, translations, and more for a versatile language tool.

🔍 Reference
(14K)
11
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

Discover a comprehensive offline dictionary and thesaurus with fast search, spelling suggestions, definitions, synonyms, and more. Enjoy ad-free browsing, usage examples, and unique search features without the need for an internet connection. Explore WordWeb Dictionary for a seamless word lookup experience.

🔍 Reference
(85)
12
Translate Free - Language Translator & Dictionary
Translate Free - Language Translator & Dictionary
Translate Free - Language Translator & Dictionary
by myLanguage
Free

Translate Free is a versatile language translation application that allows users to effortlessly translate text or speech between various languages. With user-friendly interfaces and accurate translation results, this app is your go-to tool for breaking language barriers. Experience seamless communication today!

✈️ Travel
(13K)
13
My Dictionary - Study Words
My Dictionary - Study Words
My Dictionary - Study Words
Vocabulary Builder in 185+ lng
Free

Learn words through real stories, songs, and context with a vocabulary builder that adapts to your level, featuring AI examples, offline mode, and social sharing. Start speaking a new language with confidence by downloading this innovative learning tool and discover a fun way to build your vocabulary.

📚 Education
(27)
14
Vine's Expository Dictionary
Vine's Expository Dictionary
Vine's Expository Dictionary
Dictionary & KJV Bible Verses
Free

A comprehensive dictionary app that provides detailed explanations of words and terms often found in religious texts, helping users enhance their understanding of scriptures and theological concepts. Explore meanings, references, and in-depth interpretations for a deeper insight into religious texts.

📚 Books
(1.8K)
15
Etymonline English Dictionary
Etymonline English Dictionary
Etymonline English Dictionary
Dictionary to Build Vocabulary
Free

A comprehensive English dictionary app offering word origins and vocabulary building tools. Features include instant search with spelling suggestions, offline dictionary access, related words, and premium ad-free and offline functionality. Explore word roots and enhance your vocabulary effortlessly.

📚 Education
(11K)
16
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
English Kurdish Translation
Free

A highly efficient English to Kurdish dictionary app with a vast vocabulary. Ideal for users seeking quick translations without any hassle. Download now for instant access to comprehensive language support.

🔍 Reference
(14K)
17
Bible Dictionary - Bible study
Bible Dictionary - Bible study
Bible Dictionary - Bible study
by Mauro Ricardo Calvay Guarniz
Free
📚 Education
(0)
18
Advanced English Dictionary.
Advanced English Dictionary.
Advanced English Dictionary.
English Dictionary & Thesaurus
$2.99

Explore a comprehensive English dictionary app with advanced features for definitions, synonyms, and examples. Enhance your vocabulary and language skills with this user-friendly tool. Start expanding your English knowledge today!

🔍 Reference
(238)
19
DianHua Dictionary
DianHua Dictionary
DianHua Dictionary
by JSQ, LLC
Free

An iOS Chinese English dictionary app that supports various search options like English, Mandarin Pinyin, Traditional and Simplified Characters. Features include search history, bookmarks, writing practice, flashcards, number conversion, and syncing capabilities across devices. Explore now for comprehensive language learning and reference tools.

🔍 Reference
(8)
20
Vietnamese Dictionary Dict Box
Vietnamese Dictionary Dict Box
Vietnamese Dictionary Dict Box
Engish Vietnamese Translator
Free

Access an all-in-one Vietnamese-English dictionary and translator app that offers offline access, effortless text translation, word suggestions, and more. Enhance your language learning with features like text-to-speech pronunciation, picture dictionary, and word reminders. Upgrade to Premium for an ad-free experience and additional benefits.

🔍 Reference
(18K)

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