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Best Free Grammar App Correction

245+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated August 2026

If you already know Grammar, this is the deeper bench. 245+ free grammar app correction for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Free Grammar App Correction (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Grammar: Sentence DiagrammerGrammar: Sentence DiagrammerFree4.4★ (1K)YesYesSep 2026
2Grammar Check: Spell CorrectorGrammar Check: Spell CorrectorFree4.8★ (410)YesYesSep 2026
3CorrectMe Grammar AI KeyboardCorrectMe Grammar AI KeyboardFree4.7★ (12K)YesYesSep 2026
4Sentence CorrectorSentence CorrectorFree4.8★ (32)NoYesJul 2026
5LearnEnglish Grammar (UK ed.)LearnEnglish Grammar (UK ed.)Free4.7★ (40K)YesYesSep 2026
6Grammar Check゜Grammar Check゜Free4.6★ (312)NoYesSep 2026
7Ai grammar checker ゜Ai grammar checker ゜Free4.5★ (24)NoYesAug 2026
8Grammar - Write Better with AIGrammar - Write Better with AIFree4.3★ (18)NoYesAug 2026

Top Picks for Free Grammar App Correction

Grammar: Sentence Diagrammer#1

Grammar: Sentence Diagrammer by Cookie in the fridge LLC

Spelling Check & Corrector
Editor's Choice
📊 Productivity
4.4😊(1K ratings)
FreeAdsIn-App Purchases
Grammar: Sentence Diagrammer screenshot 1
Grammar: Sentence Diagrammer screenshot 2
Grammar: Sentence Diagrammer screenshot 3
Grammar: Sentence Diagrammer screenshot 4
Grammar: Sentence Diagrammer screenshot 5
Grammar: Sentence Diagrammer screenshot 6

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.

What We Love

  • 👍 Easy to use
  • 🚀 Helpful for writing and grammar
  • 💡 Provides useful suggestions
  • 🚀 Accurate grammar and spelling corrections
  • 👍 Intuitive app interface

Room to Improve

  • 🐛 Occasional glitches and bugs
  • 🤔 Limited functionality compared to expectations
  • 💬 Annoying pop-ups asking for reviews
  • 🤔 Inconsistent performance in detecting errors
Grammar Check: Spell Corrector#2

Grammar Check: Spell Corrector by talha rehman

Fix Grammar & Sentence Checker
Strong Contender
📊 Productivity
4.8😊(410 ratings)
FreeAdsIn-App Purchases
Grammar Check: Spell Corrector screenshot 1
Grammar Check: Spell Corrector screenshot 2
Grammar Check: Spell Corrector screenshot 3
Grammar Check: Spell Corrector screenshot 4
Grammar Check: Spell Corrector screenshot 5
Grammar Check: Spell Corrector screenshot 6

This AI-powered tool goes beyond basic spelling and punctuation to correct grammar, enhance clarity, and improve sentence structure. It supports file uploads for large documents and offers unlimited checks with a history tracking feature for easy review.

What We Love

  • 👍 Great tool for grammar checking
  • 🚀 Quick and efficient
  • 👍 Useful for writing career
  • 👍 Helpful for learning disabilities
  • 👍 Works well
  • 👍 Convenient and useful
  • 👍 Awesome app
  • 👍 Helped get an A
  • 👍 Straight to the point
  • 👍 No plan to buy needed
  • 👍 Very good app
  • 👍 Easy to use
  • 👍 Top grade
  • 👍 Best platform
  • 👍 Best thing since Microsoft Word
  • 👍 Works great
  • 👍 Good app overall
  • 👍 Brilliant app
  • 👍 Love it

Room to Improve

  • 🐛 Tutorials not in chosen language
  • 🐛 Korean language support removed
  • 🐛 Translation glitches
  • 🐛 Unlimited word count misleading
  • 🐛 Ads appear frequently even after subscription
  • 🐛 Too many ads
  • 🐛 Irritating and frustrating ads
  • 🐛 Notification message not localized
  • 🐛 Annoying notification screen
  • 🐛 Apostrophes replaced with â
CorrectMe Grammar AI Keyboard#3

CorrectMe Grammar AI Keyboard by Teleprompter LLC

Spelling check and paraphrase
Worth Considering
📊 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
  • 📝 Limited text input length

More Free Grammar App Correction apps to explore

FAQ about Free Grammar App Correction

What is the best free grammar app correction for iPhone?
Grammar: Sentence Diagrammer tops our free grammar app correction ranking as of August 2026, with a 4.4-star average from 1K App Store ratings, and it's free to download.
Grammar: Sentence Diagrammer shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 245+ free grammar app correction on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps you improve your writing by checking for grammar mistakes and typos. It also enhances your text style, suggests synonyms, and provides word definitions to enrich your vocabulary.
Key features include automatic grammar correction, spelling checks, synonym suggestions, word definitions, and tools to improve text style. It aims to make your written messages professional and error-free.