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Best Free Grammar Check Keyboard Apps

246+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated August 2026

If you already know Grammarly, this is the deeper bench. 246+ free grammar check keyboard apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Free Grammar Check Keyboard Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Grammarly: AI Keyboard & VoiceGrammarly: AI Keyboard & VoiceFree4.7★ (221K)NoYesAug 2026
2CorrectMe Grammar AI KeyboardCorrectMe Grammar AI KeyboardFree4.7★ (12K)YesYesAug 2026
3Grammar Check Corrector & AIGrammar Check Corrector & AIFree4.7★ (1.6K)YesYesAug 2026
4Grammar Check゜Grammar Check゜Free4.6★ (312)NoYesAug 2026
5Grammar: Sentence DiagrammerGrammar: Sentence DiagrammerFree4.4★ (1K)YesYesAug 2026
6Grammar Checker & AI KeyboardGrammar Checker & AI KeyboardFree4.7★ (2.3K)NoYesAug 2026
7AI Keyboard - Grammar CheckAI Keyboard - Grammar CheckFree4.7★ (63)NoYesAug 2026
8Grammar Checker - Spell CheckGrammar Checker - Spell CheckFree—NoYesJul 2026

Top Picks for Free Grammar Check Keyboard

Grammarly: AI Keyboard & Voice#1

Grammarly: AI Keyboard & Voice by Superhuman Platform Inc

Write, dictate, edit, improve
Editor's Choice
📊 Productivity
4.7😊(221K ratings)
FreeIn-App Purchases
#10in Productivity
Grammarly: AI Keyboard & Voice screenshot 1
Grammarly: AI Keyboard & Voice screenshot 2
Grammarly: AI Keyboard & Voice screenshot 3
Grammarly: AI Keyboard & Voice screenshot 4
Grammarly: AI Keyboard & Voice screenshot 5
Grammarly: AI Keyboard & Voice 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
CorrectMe Grammar AI Keyboard#2

CorrectMe Grammar AI Keyboard by Teleprompter LLC

Spelling check and paraphrase
Strong Contender
📊 Productivity
4.7😞(12K ratings)
FreeAdsIn-App Purchases
CorrectMe Grammar AI Keyboard screenshot 1
CorrectMe Grammar AI Keyboard screenshot 2
CorrectMe Grammar AI Keyboard screenshot 3
CorrectMe Grammar AI Keyboard screenshot 4

Enhance your written communication with intelligent grammar and spelling checks. Improve your English writing skills with contextual error detection, smart recommendations, and explanations of mistakes. Share your polished texts effortlessly.

What We Love

  • 👍 Helpful for school work
  • 🤖 Improves writing skills
  • ✨ Useful for professional writing

Room to Improve

  • 💰 Expensive subscription
  • 🔒 Issues with account/subscription management
  • 🐛 App crashes and freezes
Grammar Check Corrector & AI#3

Grammar Check Corrector & AI by Tiny Leo Co., Ltd

AI Keyboard, Translate, Spell
Worth Considering
📊 Productivity
4.7😊(1.6K ratings)
FreeAdsIn-App Purchases
Grammar Check Corrector & AI screenshot 1
Grammar Check Corrector & AI screenshot 2
Grammar Check Corrector & AI screenshot 3
Grammar Check Corrector & AI screenshot 4
Grammar Check Corrector & AI screenshot 5
Grammar Check Corrector & AI screenshot 6

This AI-powered keyboard offers real-time grammar and spelling corrections, sentence paraphrasing, and tone adjustment directly within any app. It also includes multilingual translation capabilities to enhance your writing and communication.

What We Love

  • 🚀 Fast and efficient
  • 👍 Easy and convenient to use
  • 💡 Helpful for college and writing
  • 👍 Improves writing and grammar

Room to Improve

  • 🐛 Not working after trial/subscription
  • 💰 Expensive, should be free
  • 🔍 Requires watching ads

More Free Grammar Check Keyboard apps to explore

4
Grammar Check゜
Grammar Check゜
Grammar Check゜
Lexi English Spell Checker
Free

Improve your writing with a comprehensive grammar and spelling checker. Quickly identify and correct errors in your texts to ensure professionalism and accuracy. Easily share your polished content with others.

Punctuational error checkTyping and spelling mistake checkLowercase and uppercase check
📊 Productivity
(312)
free with in-app purchases
5
Grammar: Sentence Diagrammer
Grammar: Sentence Diagrammer
Grammar: Sentence Diagrammer
Spelling Check & Corrector
Free

Improve your writing with this app that offers grammar and spelling checks, synonym suggestions, and word definitions. Enhance your text style and vocabulary for professional and personal communication.

Grammar CheckSpelling CheckSynonym Suggestions
📊 Productivity
(1K)
subscription
6
Grammar Checker & AI Keyboard
Grammar Checker & AI Keyboard
Grammar Checker & AI Keyboard
Plagiarism & Text Humanizer
Free

Enhance your English writing with a comprehensive grammar checker. It offers real-time suggestions for grammar, punctuation, and vocabulary, acting as a sentence corrector and plagiarism checker. Improve clarity, conciseness, and overall writing style across various platforms.

Grammar correctionSentence correctionPlagiarism checker
📊 Productivity
(2.3K)
subscription
7
AI Keyboard - Grammar Check
AI Keyboard - Grammar Check
AI Keyboard - Grammar Check
AI Chat bot & Spell Checker
Free

Enhance your writing with AI-powered grammar checks, smart suggestions, and instant translations. This tool helps you craft polished emails, messages, and online content with ease, ensuring your communication is always professional and mistake-free.

Real-time grammar and spell checkAI-powered email writing assistanceSmart word and phrasing suggestions
📊 Productivity
(63)
free with in-app purchases
8
Grammar Checker - Spell Check
Grammar Checker - Spell Check
Grammar Checker - Spell Check
AI Keyboard & Paraphrase tool
Free
📚 Education
(0)
9
Typeright: Grammar Check App
Typeright: Grammar Check App
Typeright: Grammar Check App
Writing, Spelling, Punctuation
Free

This AI-powered writing assistant helps you write mistake-free everywhere. It offers grammar, spelling, and punctuation checks across multiple languages, along with translation and style suggestions. Use it in any app via its dedicated keyboard for improved writing confidence.

AI-powered writing assistantGrammar, spelling, and punctuation checkMulti-language support (English, Spanish, German)
📊 Productivity
(849)
free with in-app purchases
10
AI Grammar Check Keyboard
AI Grammar Check Keyboard
AI Grammar Check Keyboard
Translate, Proofread, Spelling
Free

This AI-powered keyboard enhances your writing as you type. It automatically corrects spelling, grammar, and punctuation while preserving your original tone and intent. Seamlessly integrate it into your daily messaging, email, and note-taking apps for clearer communication.

Real-time AI writing correctionGrammar, spelling, and punctuation fixesSentence rewriting for clarity
🔍 Reference
(1)
freemium
11
Grammar AI Keyboard: KeysAI
Grammar AI Keyboard: KeysAI
Grammar AI Keyboard: KeysAI
Typo Fix & Punctuation check
Free

This AI-powered keyboard enhances your writing by correcting grammar and spelling errors in real-time. It offers word suggestions, instant translation, and message completion to improve clarity and efficiency across all your applications.

Grammar and spelling correctionWord choice enhancementReal-time translation
📊 Productivity
(62)
free with in-app purchases
12
Grammar - Write Better with AI
Grammar - Write Better with AI
Grammar - Write Better with AI
The best grammar keyboard
Free

Enhance your writing with real-time grammar, spelling, and punctuation correction. This app offers personalized suggestions and multi-language support, integrating seamlessly into any app you use. Elevate your communication for both professional and personal use.

Real-time grammar correctionKeyboard extension for any appPersonalized writing suggestions
📚 Education
(18)
freemium
13
AI Keyboard & Grammar Checker
AI Keyboard & Grammar Checker
AI Keyboard & Grammar Checker
AI Text Typing Live Translator
Free
$4.99 | 100% OFF

Enhance your writing with an AI-powered keyboard that offers grammar correction, synonym suggestions, and paraphrasing tools. It also translates text and detects/adjusts tone, supporting all languages for seamless communication.

Grammar and spelling correctionSynonym suggestionsParaphrasing tool
📊 Productivity
(220)
free with in-app purchases
14
Linguix: Keyboard, Grammar
Linguix: Keyboard, Grammar
Linguix: Keyboard, Grammar
English Spell Check & Editor
Free

Enhance your English writing with an AI-powered assistant that corrects grammar, spelling, and style. It offers millions of typo corrections and personalized insights to improve your text quality across various platforms.

AI-powered grammar, spelling, and style correctionsMillions of typo databasePunctuation and typography recommendations
📊 Productivity
(18)
free with in-app purchases
15
LanguageTool - Grammar Checker
LanguageTool - Grammar Checker
LanguageTool - Grammar Checker
Grammar, Style & Spell Checker
Free

This intelligent writing assistant checks grammar, style, and spelling in over 20 languages. It offers suggestions to improve clarity and professionalism in your writing across various platforms and devices.

Grammar and style suggestionsMultilingual text checkingSynonym recommendations
📊 Productivity
(553)
freemium
16
Grammar Check Corrector AI
Grammar Check Corrector AI
Grammar Check Corrector AI
Spell Check & Correct Me
Free

This AI-powered writing assistant offers instant grammar and spelling corrections, text improvement suggestions, and tools like a synonym finder and definition lookup. It helps users polish their writing for emails, blog posts, and everyday communication, with easy sharing and text-to-speech functionality.

Instant grammar and spelling correctionsAI-powered text improvementDefine screen for word definitions
📊 Productivity
(224)
free with in-app purchases
17
AI Keyboard – AnyWrite Type AI
AI Keyboard – AnyWrite Type AI
AI Keyboard – AnyWrite Type AI
Grammar Checker & Translator
Free

Enhance your typing experience with an AI-powered keyboard that offers real-time grammar and spelling checks, one-tap rewriting, and instant translation in over 100 languages. Customize your keyboard and choose from various tone themes to communicate more effectively across all your apps.

Instant grammar and spelling checkerOne-tap rewrite and paraphraseMultiple tone themes
📊 Productivity
(221)
free with in-app purchases
18
Correct Grammar Checker Tool
Correct Grammar Checker Tool
Correct Grammar Checker Tool
Check Spelling & Punctuation
Free

This app helps you improve your writing by checking for grammar and spelling errors. It offers synonym suggestions and definitions to enhance your vocabulary and ensure your messages are professional and error-free. It's also a tool for learning and practicing written English.

Grammar checkSpell checkSmart recommendations
📚 Education
(5)
free with in-app purchases
19
Grammar Check Corrector +
Grammar Check Corrector +
Grammar Check Corrector +
Correct me & Paraphrase tool
Free

This writing assistant helps you eliminate errors and improve your text. It offers advanced grammar and spelling checks, synonym suggestions, and definitions to refine your vocabulary. Review your editing history and enjoy a user-friendly interface with dark mode.

Advanced grammar and spelling checkerImport text from PDFsSynonym finder and word choice improvement
📚 Education
(201)
free with in-app purchases
20
TypeAI: AI Keyboard & Writer
TypeAI: AI Keyboard & Writer
TypeAI: AI Keyboard & Writer
Translate, Grammar Spell Check
Free

Enhance your mobile writing with an AI-powered keyboard. Get real-time grammar checks, word suggestions, translations, and AI chatbot assistance for any app. Improve your communication and express yourself clearly and effectively.

AI ChatbotEmail Writing AssistanceGrammar & Spelling Check (7 languages)
📊 Productivity
(19K)
free with in-app purchases

FAQ about Free Grammar Check Keyboard

What are the best free grammar check keyboard apps for iPhone?
Grammarly: AI Keyboard & Voice tops our free grammar check keyboard apps ranking as of August 2026, with a 4.7-star average from 221K App Store ratings, and it's free to download.
Grammarly: AI Keyboard & Voice has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 246+ free grammar check keyboard apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides real-time writing feedback directly within your iPhone and iPad apps. It offers suggestions for spelling, grammar, conciseness, and vocabulary, along with AI-powered text rewrites and tone adjustments.
Key features include an AI keyboard with spelling and grammar checks in multiple languages, vocabulary and clarity recommendations (Premium), tone detection, AI rewrites for entire messages, a document editor with plagiarism detection, and a Safari extension.