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Best Collins World Dictionary Apps

175+ iOS apps curated and reviewed

4.4 avg rating
18 free apps
Updated May 2026

If you already know Oxford Dictionary & Thesaurus, this is the deeper bench. 175+ collins world dictionary apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Collins World Dictionary

Oxford Dictionary & Thesaurus#1

Oxford Dictionary & Thesaurus by MobiSystems, Inc.

Thesaurus & Offline Vocabulary
Editor's Choice
🔍 Reference
4.6😐(28K ratings)
FreeAdsIn-App Purchases
#80in 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 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.

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
Merriam-Webster Dictionary#2

Merriam-Webster Dictionary by Merriam-Webster, Inc.

Strong Contender
🔍 Reference
4.8😊(320K ratings)
FreeAdsIn-App Purchases
#36in 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

More Collins World Dictionary apps to explore

4
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)
5
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary, Thesaurus, Vocab
Free

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!

🔍 Reference
(328K)
6
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
(13K)
7
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)
8
Dictionary Linguee
Dictionary Linguee
Dictionary Linguee
German, French, Spanish, more
Free

Discover a revolutionary dictionary app offering fast and reliable translations in multiple languages, including French, Spanish, and German. Access over one billion translations, editorial dictionaries, offline mode, example sentences, and pronunciation guides for seamless language learning. Try it now for quick and accurate translations on the go.

🔍 Reference
(11K)
9
Collins Dictionary+Thesaurus
Collins Dictionary+Thesaurus
Collins Dictionary+Thesaurus
Large English dictionary
$6.99

This comprehensive English dictionary and thesaurus app provides access to over 722,000 words, meanings, and phrases, as well as 410,000 synonyms and antonyms, all offline and without requiring an internet connection. With advanced search features, pronunciation audio, and extensive coverage of scientific and technical vocabulary, it's an essential tool for anyone looking to explore and understand the English language.

🔍 Reference
(15)
10
French Dictionary +
French Dictionary +
French Dictionary +
Translator to learn English
Free

A bilingual English to French and French to English dictionary app with offline functionality, pronunciation, and translation features. Designed for students, teachers, tourists, and language learners to enhance vocabulary, learn new words, and improve language skills. Explore synonyms, antonyms, and play games for interactive learning.

📚 Education
(408)
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
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
English dictionary with Audio
Free

An innovative language tool designed to enhance vocabulary skills through interactive word meanings, synonyms, antonyms, and example sentences. Expand your linguistic knowledge effortlessly!

🔍 Reference
(4.3K)
13
Persian Dictionary - Dict Box
Persian Dictionary - Dict Box
Persian Dictionary - Dict Box
دیکشنری انگلیسی به فارسی
Free

An offline English to Persian dictionary app, providing instant translations and word definitions. Access a wide range of vocabulary without needing an internet connection. Ready to unlock the power of language at your fingertips?

🔍 Reference
(86K)
14
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)
15
Dictionary
Dictionary
Dictionary
in Widget
Free

A concise and efficient English to Japanese dictionary application that displays definitions in real-time as you type, providing a seamless and lightning-fast translation experience. Download now to access a comprehensive database of translations at your fingertips.

🔍 Reference
(4)
16
Bangla Dictionary ++
Bangla Dictionary ++
Bangla Dictionary ++
English & Bengali Translator
Free

A powerful tool for translating English to Bengali, this app provides quick and accurate word meanings, synonyms, and pronunciation guides. Perfect for anyone looking to bridge the language gap seamlessly.

📚 Education
(6.7K)
17
NAVER Dictionary
NAVER Dictionary
NAVER Dictionary
by NAVER Corp.
Free

Access a comprehensive and free dictionary app with 70 dictionaries, 30M headwords, pronunciation evaluation, quizzes, and 1M English pronunciations. Explore English-English, Thesaurus, Korean, and bilingual dictionaries. Visit the NAVER Dictionary Official Blog for more details and reach out to NAVER English Dictionary Customer Center for assistance.

📚 Education
(245)
18
dict.cc Dictionary
dict.cc Dictionary
dict.cc Dictionary
translations for 26 languages
Free

A comprehensive dictionary application offering translations for 26 languages with bidirectional functionality. Users can download and update vocabularies for free, suggest translations for review, and access additional features like "Recent Searches" and "Vocabulary Trainer." Try it ad-free with extra features for one week! Explore more at http:/www.dict.cc/iphone.php

🔍 Reference
(117)
19
Fastdic - Fast Dictionary
Fastdic - Fast Dictionary
Fastdic - Fast Dictionary
English/Persian Translator
Free

Fastdic is a high-speed English/Persian translator app serving over 2 million active users monthly. Translate seamlessly between English and Persian/Farsi with its efficient dictionary function.

🔍 Reference
(6)
20
You Dictionary All Language
You Dictionary All Language
You Dictionary All Language
Photo & Voice Translator
Free

Translate effortlessly with this comprehensive dictionary app featuring over 400,000 words, definitions, synonyms, antonyms, examples, and grammar tools. Perfect for all language enthusiasts!

🔧 Utilities
(344)

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