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Best Grammar AI Plagiarism Checker Apps

234+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

Every iPhone needs a few good grammar ai plagiarism checker apps. We benchmark 234+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Grammar AI Plagiarism Checker

Grammarly: AI Keyboard & Notes#2

Grammarly: AI Keyboard & Notes by Superhuman Platform Inc

Chats, emails, work and study
Strong Contender
📊 Productivity
4.7😊(218K ratings)
FreeAdsIn-App Purchases
#10in 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
AI Grammar Corrector Keyboard#3

AI Grammar Corrector Keyboard by INVENTO ONE PRIVATE LIMITED

Spell check, word correction
Worth Considering
📊 Productivity
4.7😊(2.2K ratings)
FreeIn-App Purchases
AI Grammar Corrector Keyboard screenshot 1
AI Grammar Corrector Keyboard screenshot 2
AI Grammar Corrector Keyboard screenshot 3
AI Grammar Corrector Keyboard screenshot 4
AI Grammar Corrector Keyboard screenshot 5
AI Grammar Corrector Keyboard screenshot 6

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.

What We Love

  • 👍 Easy to use
  • 🚀 Helpful in improving writing
  • 💡 Useful grammar and spelling corrections
  • 🤖 Accurate and reliable

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 💰 Subscription cost concerns
  • ⏱️ Slow performance at times

More Grammar AI Plagiarism Checker apps to explore

4
Quillbot-AI Writing & Keyboard
Quillbot-AI Writing & Keyboard
Quillbot-AI Writing & Keyboard
Paraphrase & Grammar Check App
Free

Enhance your writing with an AI-powered assistant that offers paraphrasing, grammar correction, and translation. Generate ideas, detect AI-written content, and create images directly from your device. Improve communication and overcome writer's block with this versatile tool.

AI ParaphraserGenerative AI writingGrammar Checker
📊 Productivity
(2.7K)
freemium
5
Plagiarism Remover-AI Rewriter
Plagiarism Remover-AI Rewriter
Plagiarism Remover-AI Rewriter
Remove Plagiarism in Seconds
Free

Effortlessly generate unique, human-like content with advanced AI tools. Detect and eliminate plagiarism, rewrite text while preserving meaning, and ensure academic integrity with citation management.

AI Plagiarism CheckerAI RewriterAI Paraphrasing Tool
📊 Productivity
(14)
free with in-app purchases
6
Plagiarism Checker -Prepostseo
Plagiarism Checker -Prepostseo
Plagiarism Checker -Prepostseo
Plagiarism Remover & Detector
Free

Enhance your writing with an AI-powered tool that checks for plagiarism, rewrites content, detects AI-generated text, and corrects grammar. It's designed for students, professionals, and content creators to ensure originality and improve text quality.

Plagiarism checkerParaphrasing toolAI content detector
🔧 Utilities
(47)
free with in-app purchases
7
Plagiarism Checker | Detect AI
Plagiarism Checker | Detect AI
Plagiarism Checker | Detect AI
Check Grammar & AI Content
Free
📚 Education
(0)
8
TurnTin – Plagiarism Checker
TurnTin – Plagiarism Checker
TurnTin – Plagiarism Checker
Detect Plagiarism & Errors
Free

This AI-powered tool helps students, educators, and professionals ensure the originality of their written content. It compares text against a vast database to detect similarities and provides detailed reports with source references, promoting academic integrity and confidence in submitted work.

AI-powered plagiarism detectionExtensive academic and web database comparisonFast and detailed similarity reports
📚 Education
(100)
free with in-app purchases
9
AI Grammar Check Spell by Fixy
AI Grammar Check Spell by Fixy
AI Grammar Check Spell by Fixy
Sentence writing checker tool
Free

Enhance your writing with advanced AI-powered grammar, spelling, and punctuation checks. Rephrase sentences for clarity, uniqueness, or formality, and access vocabulary suggestions. This tool ensures flawless communication across emails, social media, and texts.

Grammar and spelling checkerPunctuation correctionVocabulary enhancements and synonyms
📊 Productivity
(558)
free with in-app purchases
10
Plagiarism Checker & Remover‎
Plagiarism Checker & Remover‎
Plagiarism Checker & Remover‎
Plagiarism Remover & Humanizer
Free

This app helps you detect and remove plagiarized text from your documents. It scans against millions of online sources, offers rephrasing suggestions, and provides fast, reliable reports to ensure your content is original and unique.

Advanced plagiarism detectionAI-powered content rephrasingFast and reliable reports
📊 Productivity
(111)
free with in-app purchases
11
Plagiarism Checker
Plagiarism Checker
Plagiarism Checker
Duplicate Content Detector
Free

Detect duplicate content with this mobile application. It offers instant, fast, and accurate plagiarism checks for text or images, ensuring your work is original. Ideal for students, writers, and professionals.

Instant Plagiarism CheckingFast and AccurateCheck Plagiarism by Upload Image (OCR)
📚 Education
(1.2K)
free with in-app purchases
12
AI Grammar Check,Spell Checker
AI Grammar Check,Spell Checker
AI Grammar Check,Spell Checker
AI Type,Summarizer,Paraphrase
Free

Enhance your writing with AI-powered grammar, spelling, and style checks. This tool helps you detect AI-generated text, paraphrase content, and even generate essays. Improve clarity, correctness, and impact across all your written communications.

Grammar, spelling, and punctuation correctionAI text detection and humanizationPlagiarism scanning and removal
📊 Productivity
(16)
free with in-app purchases
13
Paraphrasing Tool: Rewriter
Paraphrasing Tool: Rewriter
Paraphrasing Tool: Rewriter
Paraphraser for Better Writing
Free

This AI-powered tool helps you rewrite sentences, paragraphs, and entire documents with various tones and styles. It offers unlimited paraphrasing, a grammar checker, and a plagiarism detector to ensure unique and error-free content.

Unlimited AI Paraphrasing ModesUnlimited Words LimitGrammar Checker Tool
📊 Productivity
(409)
free with in-app purchases
14
Ginger Writer
Ginger Writer
Ginger Writer
Grammar Checker, Paraphraser
Free

This AI-powered writing assistant helps you write better and faster. It corrects grammar, spelling, punctuation, and syntax with high accuracy. Enhance your text with a sentence rephraser and vocabulary tools.

AI-powered grammar checkerSentence rephraserSynonym finder
📊 Productivity
(3.5K)
free with in-app purchases
15
Learn English Grammar Checker
Learn English Grammar Checker
Learn English Grammar Checker
Useful English Grammar Checker
Free

Assess your English grammar proficiency with comprehensive tests and targeted lessons. Identify areas for improvement and reinforce learning with practice exercises. Track your progress and revisit past tests to master English grammar rules.

Comprehensive grammar testsExpert-prepared grammar lessonsTargeted grammar exercises
📚 Education
(597)
free with in-app purchases
16
TurniTen - Plagiarism Checker
TurniTen - Plagiarism Checker
TurniTen - Plagiarism Checker
Scan, Rewrite & Improve Text
Free
📚 Education
(0)
17
ParagraphAI: Writer & Keyboard
ParagraphAI: Writer & Keyboard
ParagraphAI: Writer & Keyboard
AI Writing: Email, Essay, Text
Free

This AI-powered writing tool helps you generate original content, draft emails, and summarize text in over 40 languages. It functions as a keyboard, allowing you to write and edit seamlessly within any app, ensuring clear and confident communication.

AI Text GeneratorAI Email WriterAI Writing Assistant
📊 Productivity
(2.5K)
free with in-app purchases
18
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
19
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
(1.7K)
freemium
20
Grammar Check Corrector by AI
Grammar Check Corrector by AI
Grammar Check Corrector by AI
AI Keyboard, Rewrite & 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