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Best Jdof Apps

203+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated May 2026

Every iPhone needs a few good jdof apps. We benchmark 203+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Jdof Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1JDOFJDOFFree—NoNoMay 2026
2Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoJul 2026
3Oxford Dictionary & ThesaurusOxford Dictionary & ThesaurusFree4.6★ (28K)YesYesJul 2026
4Merriam-Webster DictionaryMerriam-Webster DictionaryFree4.8★ (320K)YesYesJul 2026
5Word of the Day・VocabularyWord of the Day・VocabularyFree4.7★ (38K)YesYesJul 2026
6Japanese!! Learn Kana & KanjiJapanese!! Learn Kana & KanjiFree4.8★ (22K)NoYesJul 2026
7Vocabulary - Learn words dailyVocabulary - Learn words dailyFree4.8★ (209K)YesYesJul 2026
8WordWeb DictionaryWordWeb DictionaryFree4.5★ (85)NoNoJul 2026

Top Picks for Jdof

Dictionary.com: English Words#2

Dictionary.com: English Words by Curiosity Media

Dictionary, Thesaurus, Vocab
Strong Contender
🔍 Reference
4.8😐(328K 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

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

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
Oxford Dictionary & Thesaurus#3

Oxford Dictionary & Thesaurus by MobiSystems, Inc.

Thesaurus & Offline Vocabulary
Worth Considering
🔍 Reference
4.6😐(28K ratings)
FreeAdsIn-App Purchases
#87in Reference
Oxford Dictionary & Thesaurus screenshot 1
Oxford Dictionary & Thesaurus screenshot 2
Oxford Dictionary & Thesaurus screenshot 3
Oxford Dictionary & Thesaurus screenshot 4
Oxford Dictionary & Thesaurus screenshot 5
Oxford Dictionary & Thesaurus screenshot 6

Access a vast collection of dictionaries and thesauruses with definitions, pronunciations, and etymology. Features include offline access, advanced search options, and personalized word lists. Ideal for students, professionals, and word enthusiasts.

What We Love

  • 👍 Reliable and simple to use
  • 👍 Comprehensive and best for all English, especially rare and aged language
  • 👍 Very useful for learning new words
  • 👍 Excellent reference app

Room to Improve

  • 🐛 Glitchy, way too many ads
  • 🔒 Annoying popup ads makes it unusable
  • 🔒 Ads stuck in, despite payment

More Jdof apps to explore

4
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

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.

Offline dictionary accessVoice search for wordsDaily Word of the Day
🔍 Reference
(320K)
free with in-app purchases
5
Word of the Day・Vocabulary
Word of the Day・Vocabulary
Word of the Day・Vocabulary
Vocab Builder & Word Games
Free

Enhance your vocabulary with daily words, engaging games, and personalized quizzes. This app offers expert-curated content and interactive challenges to make learning stick and improve your communication skills.

Daily word insights with definitions and examplesVocabulary assessment and personalized learning plansWord games like Hangman and Gaps
📚 Education
(38K)
free with in-app purchases
6
Japanese!! Learn Kana & Kanji
Japanese!! Learn Kana & Kanji
Japanese!! Learn Kana & Kanji
Hiragana, Kanji, and Grammar
Free

Master Japanese writing with comprehensive lessons for Hiragana and Katakana. Build vocabulary and grammar skills through engaging quizzes and spaced repetition. Practice reading and writing with audio pronunciation, all offline.

Hiragana and Katakana writing lessonsVocabulary and grammar lessonsSpaced repetition review quizzes
📚 Education
(22K)
free with in-app purchases
7
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Word of the day widget & games
Free

Expand your vocabulary with daily word learning and engaging games. This app offers customizable learning paths and difficulty levels to suit your English proficiency. Make vocabulary acquisition a fun and effective part of your routine.

Learn new words dailyCustomizable difficulty levelsSelect vocabulary categories
📚 Education
(209K)
free with in-app purchases
8
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

This app provides a comprehensive offline English dictionary and thesaurus with fast searching, spelling suggestions, definitions, and usage examples. It offers extensive word data and advanced search filters without requiring an internet connection.

Offline dictionary and thesaurusFast searchingSpelling suggestions
🔍 Reference
(85)
free
9
TOEFL Prep & Practice
TOEFL Prep & Practice
TOEFL Prep & Practice
Listening, Reading, & Speaking
Free

Prepare for the TOEFL exam with authentic practice questions and AI-powered feedback. Master all four sections of the test with personalized coaching, expert video lessons, and detailed performance analytics. Aim to improve your score with realistic study materials and expert support.

100% Official TOEFL questions from ETS1,300+ authentic practice questions4 full-length practice tests
📚 Education
(3.1K)
free with in-app purchases
10
Kanji Study - Learn Japanese!
Kanji Study - Learn Japanese!
Kanji Study - Learn Japanese!
어휘로 배우는 일본어 능력시험 JLPT 5급~1급
Free

This app teaches Japanese kanji by focusing on vocabulary words. It offers writing practice with stroke detection and spaced repetition reviews for effective memorization. Learn kanji readings naturally through over 5,000 JLPT-aligned words.

Vocabulary-first kanji learningWriting lessons with stroke detectionSpaced repetition reviews
📚 Education
(6.9K)
free with in-app purchases
11
ICD10 Consult
ICD10 Consult
ICD10 Consult
Smart, quick medical coding
Free

Access a comprehensive and current ICD-10-CM medical coding resource with flexible, natural language search. This app simplifies coding by understanding synonyms, acronyms, and variations in terminology, and allows for custom notes and quick access to frequently used codes.

Flexible, natural language searchCustomizable code notesCross-referenced acronyms and synonyms
🏥 Medical
(14K)
ad-supported
12
Dictionary.
Dictionary.
Dictionary.
by TheFreeDictionary.com
Free

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.

Offline dictionary and thesaurusMillions of definitions and synonymsWord of the Day and Idiom of the Day
🔍 Reference
(14K)
free with in-app purchases
13
Etymonline English Dictionary
Etymonline English Dictionary
Etymonline English Dictionary
Dictionary to Build Vocabulary
Free

Explore the origins and history of English words with this comprehensive dictionary app. It offers instant search, related word suggestions, and an offline mode for premium users. Enhance your vocabulary and understanding of word roots.

Word origin explorationInstant search with suggestionsRelated words by root
📚 Education
(11K)
free with in-app purchases
14
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
English dictionary with Audio
Free

This comprehensive English dictionary and thesaurus offers precise definitions, synonyms, antonyms, and related words. It features intelligent search tools, offline audio, and customizable themes to enhance your language learning experience.

140,000+ definitionsSynonyms, antonyms, and related wordsOffline audio pronunciation
🔍 Reference
(4.3K)
free with in-app purchases
15
Exam Vocabulary Builder
Exam Vocabulary Builder
Exam Vocabulary Builder
by Renkara Media Group, Inc.
Free

Expand your English vocabulary for academic and professional exams with this app. It uses flashcard-like learning with definitions, synonyms, and example sentences. Features include spaced repetition, quizzes, and progress tracking.

Flashcard-like learningDefinitions, synonyms, example sentencesSpaced repetition mode
📚 Education
(3)
free with in-app purchases
16
WikEM
WikEM
WikEM
Emergency Medicine Wiki
Free

This app provides a continuously updated wiki and database of emergency medicine knowledge for physicians. Access key information offline for rapid reference during daily practice. An in-app subscription unlocks advanced AI-powered questions, favorites, and history features.

Emergency medicine knowledge databaseContinuously updated contentOffline access
🏥 Medical
(4.6K)
free with in-app purchases
17
Power Thesaurus
Power Thesaurus
Power Thesaurus
Comprehensive. Fast. Reliable.
Free

Find accurate synonyms, antonyms, definitions, and related words with this comprehensive and fast thesaurus. Designed for writers, students, and professionals, it offers intuitive navigation and smart filters to help you express ideas clearly and confidently.

Ad-free PRO MembershipIntuitive navigationSmart filters
🔍 Reference
(2.9K)
freemium
18
Arabic Dictionary +
Arabic Dictionary +
Arabic Dictionary +
Translator to learn English
Free

This app offers a comprehensive bilingual English-Arabic dictionary and translator with over 350,000 words and phrases. It supports offline use, image text scanning, and includes learning tools like flashcards and word games to enhance vocabulary.

Bilingual English-Arabic dictionaryOffline translation and pronunciationImage text scanning
📚 Books
(5.1K)
free with in-app purchases
19
10 Minute Japanese
10 Minute Japanese
10 Minute Japanese
Learn the language fast!
Free

Master Japanese with just 10 minutes a day. This app uses scientifically proven spaced repetition to help you quickly expand your vocabulary and improve speaking, listening, and writing skills. Learn over 500 new words monthly and cover a year's college course material in just 3 months.

Spaced repetition learning methodVocabulary expansion (500+ words/month)Speaking and listening practice
📚 Education
(394)
subscription
20
Shirabe Jisho
Shirabe Jisho
Shirabe Jisho
Offline dictionary and more
Free

This app provides a comprehensive offline Japanese-English and English-Japanese dictionary. It includes extensive entries, kanji details with stroke order, name databases, and example sentences. Features handwriting recognition and advanced search options for efficient language learning.

Offline Japanese-English dictionaryKanji with stroke orderJapanese names database
🔍 Reference
(8.6K)
free

FAQ about Jdof

Are there free jdof apps for iPhone?
Yes — 20 of the top jdof apps we rank are free to download, including JDOF and Dictionary.com: English Words.
JDOF has no ads and has no in-app purchases, according to its App Store listing as of May 2026.
We track 203+ jdof apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.