Looking for free thesaurus apps? 17 of our 247+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
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.
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.
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
Merriam-Webster Dictionary tops our thesaurus apps ranking as of August 2026, with a 4.8-star average from 324K App Store ratings, and it's free to download.
Are there free thesaurus apps for iPhone?
Yes — 17 of the top thesaurus apps we rank are free to download, including Merriam-Webster Dictionary and Power Thesaurus.
Does Merriam-Webster Dictionary have ads or in-app purchases?
Merriam-Webster Dictionary shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
How many thesaurus apps are on the App Store?
We track 247+ thesaurus apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
What does the Merriam-Webster Dictionary app do?
This app provides access to America's most respected dictionary, continuously updated with new words and meanings. It's designed for English language reference, education, and vocabulary building, offering features like offline access, voice search, and a thesaurus.
What are the key features of the Merriam-Webster Dictionary app?
Key features include offline access to definitions and synonyms, voice search, a daily 'Word of the Day,' word games for vocabulary testing, favorite word tracking, and an integrated thesaurus with over 200,000 word choices. It also offers audio pronunciations by real English speakers.
