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Best Free Grammar App

249+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our free grammar app list covers 249+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Free Grammar App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Grammarly: AI Keyboard & NotesGrammarly: AI Keyboard & NotesFree4.7★ (221K)NoYesAug 2026
2CorrectMe Grammar AI KeyboardCorrectMe Grammar AI KeyboardFree4.7★ (12K)YesYesAug 2026
3Grammar Check゜Grammar Check゜Free4.6★ (312)NoYesAug 2026
4LearnEnglish Grammar (UK ed.)LearnEnglish Grammar (UK ed.)Free4.7★ (39K)YesYesAug 2026
5English Grammar in Use & TestEnglish Grammar in Use & TestFree4.6★ (332)YesNoAug 2026
6Grammar Check Corrector by AIGrammar Check Corrector by AIFree4.7★ (1.6K)YesYesAug 2026
7AI Grammar Corrector KeyboardAI Grammar Corrector KeyboardFree4.7★ (2.3K)NoYesAug 2026
8AI Grammar Checker for EnglishAI Grammar Checker for EnglishFree4.4★ (308)YesYesAug 2026

Top Picks for Free Grammar App

Grammarly: AI Keyboard & Notes#1

Grammarly: AI Keyboard & Notes by Superhuman Platform Inc

Write, dictate, edit, improve
Editor's Choice
📊 Productivity
4.7😊(221K ratings)
FreeIn-App Purchases
#11in 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
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゜#3

Grammar Check゜ by Alexa Horvath

Lexi English Spell Checker
Worth Considering
📊 Productivity
4.6(312 ratings)
FreeIn-App Purchases
Grammar Check゜ screenshot 1
Grammar Check゜ screenshot 2
Grammar Check゜ screenshot 3
Grammar Check゜ screenshot 4

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.

More Free Grammar App apps to explore

4
LearnEnglish Grammar (UK ed.)
LearnEnglish Grammar (UK ed.)
LearnEnglish Grammar (UK ed.)
Fun English grammar activities
Free

Improve your English grammar with thousands of practice questions and activities. Covers all levels from beginner to advanced, with various question types and grammar topics. Track your progress and test your knowledge.

1000s of practice questionsBeginner to Advanced levels (CEFR A1-C2)Over 600 activities per level
📚 Education
(39K)
free with in-app purchases
5
English Grammar in Use & Test
English Grammar in Use & Test
English Grammar in Use & Test
English Grammar with full test
Free

Improve your English grammar with interactive lessons and tests. This app provides clear explanations for mistakes and helps you identify areas needing more practice. Perfect for intermediate learners to enhance their language skills.

Grammar lessonsEnglish testsMistake explanations
📚 Education
(332)
ad-supported
6
Grammar Check Corrector by AI
Grammar Check Corrector by AI
Grammar Check Corrector by AI
AI Keyboard, Translate, Spell
Free

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.

AI Keyboard IntegrationReal-time Grammar & Spell CheckerParaphrase & Tone Adjustment
📊 Productivity
(1.6K)
free with in-app purchases
7
AI Grammar Corrector Keyboard
AI Grammar Corrector Keyboard
AI Grammar Corrector Keyboard
Paraphrase Tool & Spell Check
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
8
AI Grammar Checker for English
AI Grammar Checker for English
AI Grammar Checker for English
Check grammar, spell, sentence
Free

This app acts as a personal English grammar and spelling assistant. It corrects errors in real-time, offers detailed analysis of mistakes, and even includes OCR scanning and word translation to enhance your writing and understanding.

Real-time grammar and spelling auto-correctDetailed error analysis and tipsOCR text scanner from images
📊 Productivity
(308)
free with in-app purchases
9
English Grammar - Book
English Grammar - Book
English Grammar - Book
by Steve Kim
Free

This app provides a comprehensive English grammar guide with simple explanations and numerous examples. It offers structured lessons by level or topic, along with interactive quizzes to reinforce learning. Improve your writing and speaking skills with this free educational tool.

138 grammar pointsSimple explanationsMany examples
📚 Education
(452)
free with in-app purchases
10
Grammar Check - AI Writing App
Grammar Check - AI Writing App
Grammar Check - AI Writing App
AI assistant for work & study
Free

Enhance your writing with a robust AI assistant that offers detailed grammar analysis across multiple languages. Improve your text for work and study with this powerful tool.

Detailed grammar analysisMulti-language supportWriting improvement tool
🔧 Utilities
(14)
ad-supported
11
Träning: Grammar Practice
Träning: Grammar Practice
Träning: Grammar Practice
Unlimited Drills A1–B2
Free
📚 Education
(0)
12
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
13
Grammar AI Plagiarism checker
Grammar AI Plagiarism checker
Grammar AI Plagiarism checker
Check Grammar & Detect AI
Free
📊 Productivity
(0)
14
GrammarTrack: English Grammar
GrammarTrack: English Grammar
GrammarTrack: English Grammar
Learn English Grammar & Words
Free
📚 Education
(0)
15
GrammarLite - German Grammar
GrammarLite - German Grammar
GrammarLite - German Grammar
by Serhii Ptitsyn
Free
📚 Education
(0)
16
Improve English Grammar With Exercises Worksheets
Improve English Grammar With Exercises Worksheets
Improve English Grammar With Exercises Worksheets
by pimporn rungratikunthorn
Free
📚 Education
(0)
17
English Grammar Expert
English Grammar Expert
English Grammar Expert
Quiz & Daily Performance
Free
📚 Education
(0)
18
Grammar Checker: Learn with AI
Grammar Checker: Learn with AI
Grammar Checker: Learn with AI
AI Grammar Checker & Corrector
Free
📚 Education
(0)
19
Better Grammar For Adults
Better Grammar For Adults
Better Grammar For Adults
Build real grammar confidence
Free
📚 Education
(0)
20
Grammar Now
Grammar Now
Grammar Now
Easy Grammar. Learn now!!
Free

Master English grammar with interactive lessons and practice quizzes. Covers a comprehensive syllabus from basic nouns to complex tenses and sentence structures. Test your knowledge and improve your language skills.

Comprehensive grammar syllabusInteractive practice questionsCovers nouns, verbs, tenses, and more
📚 Education
(3)
free with in-app purchases

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FAQ about Free Grammar App

What is the best free grammar app for iPhone?
Grammarly: AI Keyboard & Notes tops our free grammar app ranking as of July 2026, with a 4.7-star average from 221K App Store ratings, and it's free to download.
Grammarly: AI Keyboard & Notes has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 249+ free grammar app on the iOS App Store as of July 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.