Best Free Grammar Checker Apps

249+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated October 2026

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

Compare top Free Grammar Checker Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CorrectMe Grammar AI KeyboardCorrectMe Grammar AI KeyboardFree4.7★ (13K)YesYesNov 2026
2Grammar Checker AI for EnglishGrammar Checker AI for EnglishFree4.4★ (55)NoNoOct 2026
3Grammarly: AI Keyboard & VoiceGrammarly: AI Keyboard & VoiceFree4.7★ (228K)NoYesNov 2026
4Grammar Check゜Grammar Check゜Free4.7★ (356)NoYesOct 2026
5Grammar Checker for writing Emails and TextsGrammar Checker for writing Emails and TextsFree3.3★ (68)NoNoOct 2026
6Grammar Checker & AI KeyboardGrammar Checker & AI KeyboardFree4.7★ (2.4K)NoYesOct 2026
7LearnEnglish Grammar (UK ed.)LearnEnglish Grammar (UK ed.)Free4.7★ (40K)YesYesNov 2026
8Grammar AI Plagiarism checkerGrammar AI Plagiarism checkerFree—NoNoMay 2026

Top Picks for Free Grammar Checker

CorrectMe Grammar AI Keyboard#1

CorrectMe Grammar AI Keyboard by Teleprompter LLC

Spelling check and paraphrase
Editor's Choice
📊 Productivity
4.7😞(13K 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
Grammarly: AI Keyboard & Voice#3

Grammarly: AI Keyboard & Voice by Superhuman Platform Inc

Write, dictate, edit, improve
Worth Considering
📊 Productivity
4.7😊(228K ratings)
FreeIn-App Purchases
#14in 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
  • 👍 Beneficial for non-native speakers
  • 👍 Seamless integration across devices

Room to Improve

  • 🐛 Buggy keyboard behavior
  • 🐛 Inconsistent performance across platforms
  • 🔒 Privacy concerns with 'full access' requirement
  • 💰 Expensive premium subscription
  • 🤔 Overzealous correction suggestions

More Free Grammar Checker apps to explore

FAQ about Free Grammar Checker

What are the best free grammar checker apps for iPhone?
CorrectMe Grammar AI Keyboard tops our free grammar checker apps ranking as of October 2026, with a 4.7-star average from 13K App Store ratings, and it's free to download.
CorrectMe Grammar AI Keyboard shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ free grammar checker apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.