Best Thesaurus Keyboard Apps

210+ iOS apps curated and reviewed

4.6 avg rating
17 free apps
Updated June 2026

Every iPhone needs a few good thesaurus keyboard apps. We benchmark 210+ 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 Thesaurus Keyboard Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Thesaurus Keyboard - SynonymsThesaurus Keyboard - SynonymsFree5.0★ (5)NoYesJul 2026
2Thesaurus Synonyms AI KeyboardThesaurus Synonyms AI KeyboardFree4.9★ (13)YesYesJul 2026
3Grammarly: AI Keyboard & NotesGrammarly: AI Keyboard & NotesFree4.7★ (220K)NoYesJul 2026
4Power ThesaurusPower ThesaurusFree4.8★ (2.9K)YesYesJul 2026
5Gboard – the Google KeyboardGboard – the Google KeyboardFree4.0★ (53K)NoNoJul 2026
6Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoJul 2026
7Oxford Dictionary & ThesaurusOxford Dictionary & ThesaurusFree4.6★ (28K)NoYesJul 2026
8Microsoft SwiftKey AI KeyboardMicrosoft SwiftKey AI KeyboardFree4.6★ (121K)NoYesJul 2026

Top Picks for Thesaurus Keyboard

Thesaurus Keyboard - Synonyms#1

Thesaurus Keyboard - Synonyms by Jordan Zeleny

Improve Your Vocab and Writing
Editor's Choice
📊 Productivity
5.0(5 ratings)
FreeIn-App Purchases
Thesaurus Keyboard - Synonyms screenshot 1
Thesaurus Keyboard - Synonyms screenshot 2
Thesaurus Keyboard - Synonyms screenshot 3
Thesaurus Keyboard - Synonyms screenshot 4

Enhance your vocabulary and writing with a powerful keyboard extension that provides instant access to synonyms and AI-powered word discovery. Features an intuitive interface, beautiful dark mode, and seamless integration with your favorite apps.

Thesaurus Synonyms AI Keyboard#2

Thesaurus Synonyms AI Keyboard by Burak Gomec

Power & Vocabulary & Grammar
Strong Contender
📊 Productivity
4.9(13 ratings)
FreeAdsIn-App Purchases
Thesaurus Synonyms AI Keyboard screenshot 1
Thesaurus Synonyms AI Keyboard screenshot 2
Thesaurus Synonyms AI Keyboard screenshot 3
Thesaurus Synonyms AI Keyboard screenshot 4
Thesaurus Synonyms AI Keyboard screenshot 5
Thesaurus Synonyms AI Keyboard screenshot 6

This keyboard extension offers a powerful thesaurus and AI writing assistant to help you find synonyms, rephrase sentences, and enhance your vocabulary across all apps. Elevate your writing with intelligent suggestions for richer, more impactful communication.

Grammarly: AI Keyboard & Notes#3

Grammarly: AI Keyboard & Notes by Superhuman Platform Inc

Write, dictate, edit, improve
Worth Considering
📊 Productivity
4.7😊(220K ratings)
FreeIn-App Purchases
#9in Productivity
Grammarly: AI Keyboard & Notes screenshot 1
Grammarly: AI Keyboard & Notes screenshot 2
Grammarly: AI Keyboard & Notes screenshot 3
Grammarly: AI Keyboard & Notes screenshot 4
Grammarly: AI Keyboard & Notes screenshot 5
Grammarly: AI Keyboard & Notes screenshot 6

Enhance your writing across all apps with AI-powered suggestions for grammar, spelling, and clarity. Generate new versions of your text, detect tone, and improve conciseness. Also includes a document editor and Safari extension for comprehensive writing support.

What We Love

  • 🚀 Easy to use
  • 🚀 Extremely useful
  • 👍 Helps improve writing skills
  • 👍 Provides useful suggestions

Room to Improve

  • 🐛 Buggy keyboard behavior
  • 🐛 Inconsistent performance across platforms
  • 🔒 Privacy concerns with 'full access' requirement

More Thesaurus Keyboard apps to explore

4
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
5
Gboard – the Google Keyboard
Gboard – the Google Keyboard
Gboard – the Google Keyboard
Search. GIFs. Emojis and more.
Free

This keyboard app integrates Google Search, GIFs, and emojis directly into your typing experience. It offers features like Glide Typing for faster input and allows you to search and share information without leaving your current application.

Google Search integrationGIF and emoji searchGlide Typing for faster input
🔧 Utilities
(53K)
free
6
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary, Thesaurus, Vocab
Free

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.

2 million+ definitions and synonymsWord of the DayExample sentences
🔍 Reference
(328K)
free with in-app purchases
7
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Etymology & Offline Vocabulary
Free

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.

15 Oxford DictionariesThesaurus integrationAudio pronunciations
🔍 Reference
(28K)
free with in-app purchases
8
Microsoft SwiftKey AI Keyboard
Microsoft SwiftKey AI Keyboard
Microsoft SwiftKey AI Keyboard
Copilot | GPT-4 | DALL·E 3
Free

This intelligent keyboard learns your writing style to provide accurate autocorrect and helpful predictions. It offers customizable themes and quick access to emojis and GIFs, allowing you to communicate faster and more efficiently.

Learns writing styleAccurate autocorrectHelpful predictions
🔧 Utilities
(121K)
free with in-app purchases
9
FreeSaurus - The Free Thesaurus!
FreeSaurus - The Free Thesaurus!
FreeSaurus - The Free Thesaurus!
by Weeswares Pte Ltd
Free

This is a straightforward thesaurus app that provides synonyms and antonyms for words. It focuses on simplicity and ease of use, offering related words alongside definitions. An internet connection is required for it to function.

Synonyms and antonymsRelated wordsSimple interface
🔍 Reference
(120)
free
10
Thesaurus Keyboard: Synonyms
Thesaurus Keyboard: Synonyms
Thesaurus Keyboard: Synonyms
Synonyms as you type
Free
📊 Productivity
(0)
11
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
12
Thesaurus dictionary- Wordloop
Thesaurus dictionary- Wordloop
Thesaurus dictionary- Wordloop
Synonyms power up vocabulary
Free

Enhance your writing by accessing a thesaurus directly from your keyboard. Select any word in any app to instantly see synonyms and related terms, helping you expand your vocabulary and refine your text. This ad-free tool offers a simple and effective way to improve your communication.

Keyboard thesaurus integrationInstant word suggestionsSynonym lookup in any app
🔍 Reference
(258)
free with in-app purchases
13
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
14
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
by TheFreeDictionary.com
$9.99

Access a comprehensive offline dictionary and thesaurus with extensive content in multiple languages. Explore definitions, synonyms, and specialized dictionaries for various fields. Enjoy an ad-free experience with features like word games and instant lookups.

Ad-free experienceOffline English dictionary and thesaurusOffline dictionaries in 13 languages
🔍 Reference
(2.5K)
paid
15
Kal Keyboard (Amharic)
Kal Keyboard (Amharic)
Kal Keyboard (Amharic)
by Lominat LLC
Free

This application offers a streamlined method for typing Fidel characters, supporting both double-tap and slide gestures for enhanced input. It features an advanced word prediction algorithm specifically designed for Amharic, significantly boosting typing speed.

Fast Fidel character typingDouble tap inputSlide input
🔧 Utilities
(7K)
free
16
Pocket Thesaurus
Pocket Thesaurus
Pocket Thesaurus
The Ultimate Offline Thesaurus
Free

Expand your vocabulary and master the English language with this offline thesaurus. Quickly find synonyms and antonyms, explore word definitions, and enhance your writing and communication skills. Features include daily word challenges and advanced search options.

Extensive offline access to 90,000+ wordsFast and efficient synonym/antonym searchWord of the Day/Week from GRE list
🔍 Reference
(380)
free with in-app purchases
17
Fonts Keyboard for iPhone,iPad
Fonts Keyboard for iPhone,iPad
Fonts Keyboard for iPhone,iPad
Cool Art Symbols & Emojis App
Free

Enhance your messages and social media content with a wide variety of unique fonts, stylish symbols, and custom emojis. Create eye-catching Instagram Story covers and personalize your text across all your favorite apps.

90+ Unique FontsCustom Font MakerStylish Symbols & Decorations
🔧 Utilities
(11K)
subscription
18
Roget's II: New Thesaurus
Roget's II: New Thesaurus
Roget's II: New Thesaurus
Synonyms & Antonyms by UniDict
$4.99

Access a comprehensive English thesaurus with millions of synonyms and related terms. Enhance your vocabulary and express yourself more effectively with this powerful reference tool, featuring advanced search and offline capabilities.

Full text of Roget's II: The New ThesaurusMillions of synonyms and related termsReal-time progressive look-up
🔍 Reference
(351)
paid
19
Bear - AI Keyboard
Bear - AI Keyboard
Bear - AI Keyboard
Keyboard Fusing AI, Web Search
Free

Enhance your typing with an AI-powered keyboard that integrates web search, synonyms, and text refinement tools. Access AI chatbots and use saved templates without leaving your current app.

AI Chat (ChatGPT, Gemini, Perplexity)Auto SynonymsBuilt-in Browser
🔧 Utilities
(36)
free with in-app purchases
20
Chambers Thesaurus
Chambers Thesaurus
Chambers Thesaurus
Offline English thesaurus
$4.99

This offline English thesaurus offers a vast collection of synonyms and antonyms for writers and language enthusiasts. It features intelligent word entry with spelling suggestions and advanced search capabilities, all accessible without an internet connection.

Nearly 40,000 indexed words400,000 synonyms and antonymsIntelligent spelling suggestions
🔍 Reference
(11)
paid

FAQ about Thesaurus Keyboard

What are the best thesaurus keyboard apps for iPhone?
Thesaurus Keyboard - Synonyms tops our thesaurus keyboard apps ranking as of June 2026, with a 5.0-star average from 5 App Store ratings, and it's free to download.
Yes — 17 of the top thesaurus keyboard apps we rank are free to download, including Thesaurus Keyboard - Synonyms and Thesaurus Synonyms AI Keyboard.
Thesaurus Keyboard - Synonyms has no ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 210+ thesaurus keyboard apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
Thesaurus Keyboard offers several subscription plans, including Weekly ($3.99/P7D), Pro (weekly at $4.99/P7D with a 3-day free trial), Pro (quarterly at $9.99/P3M), Quarterly ($12.99/P3M), and Pro (yearly at $19.99/P1Y).
The AI-powered word discovery goes beyond traditional thesauri by using intelligent algorithms to scour vast linguistic databases. This unearths an extensive selection of additional words and phrases, offering nuanced alternatives to expand your vocabulary.

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