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Best AI Writing App

246+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

With an average user rating of 4.7★, the ai writing app category is one of the App Store's strongest. Browse all 246+ apps we track, sorted so the most loved ones surface first.

Compare top AI Writing App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Grammarly: AI Keyboard & NotesGrammarly: AI Keyboard & NotesFree4.7★ (221K)NoYesAug 2026
2ChatGPTChatGPTFree4.8★ (9.2M)YesYesAug 2026
3Author AI: Book CreatorAuthor AI: Book CreatorFree4.5★ (3.6K)YesYesAug 2026
4Chat AI - Ask AnythingChat AI - Ask AnythingFree4.8★ (130K)YesYesAug 2026
5Rudyard: AI Writing AppRudyard: AI Writing AppFree4.6★ (9)YesYesJul 2026
6Sudowrite - AI Novel WritingSudowrite - AI Novel WritingFree4.5★ (349)NoYesAug 2026
7Claude by AnthropicClaude by AnthropicFree4.7★ (226K)NoYesAug 2026
8AI Writer: Email Letter EssayAI Writer: Email Letter EssayFree4.8★ (6.6K)YesYesAug 2026

Top Picks for AI Writing 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
ChatGPT#2

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Strong Contender
📊 Productivity
4.8😊(9.2M ratings)
FreeAdsIn-App Purchases
#1in Productivity
ChatGPT screenshot 1
ChatGPT screenshot 2
ChatGPT screenshot 3
ChatGPT screenshot 4
ChatGPT screenshot 5
ChatGPT screenshot 6

This app provides access to advanced AI capabilities, including text generation, image creation from descriptions, and voice conversations. It offers personalized advice, creative inspiration, and instant answers for various tasks, syncing history across devices.

What We Love

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and user-friendly interface
  • 🤖 Impressive conversational abilities
  • 💡 Convenient mobile access to ChatGPT

Room to Improve

  • 🐛 Occasional inaccuracies or inconsistencies in responses
  • 🔖 Limited to pre-2021 data, lacking real-time updates
  • 🔒 Concerns about privacy and data usage
Author AI: Book Creator#3

Author AI: Book Creator by Murphy Brantley

Novel Writing & Story Writer
Worth Considering
🔧 Utilities
4.5😊(3.6K ratings)
FreeAdsIn-App Purchases
Author AI: Book Creator screenshot 1
Author AI: Book Creator screenshot 2
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Author AI: Book Creator screenshot 4
Author AI: Book Creator screenshot 5
Author AI: Book Creator screenshot 6

This app uses advanced AI to generate personalized stories, poems, and novels based on your input. Explore a vast library of themes and genres, or create your own prompts for unique narrative experiences.

What We Love

  • 🚀 Amazing story generation
  • 👍 Helpful for writers with creative block
  • 👍 Detailed and descriptive stories
  • 🤩 Impressive AI capabilities

Room to Improve

  • 🐛 Repeated or recycled content in chapters
  • 🔒 Limited customization and control over stories
  • 💰 Paid credits required for additional stories

More AI Writing App apps to explore

4
Chat AI - Ask Anything
Chat AI - Ask Anything
Chat AI - Ask Anything
AI Chatbot & Essay Writer Bot
Free

Engage in intelligent conversations with an advanced AI chatbot. This app offers personalized responses on a wide range of topics and can assist with writing tasks like essays and emails. Its AI continuously learns for more natural interactions.

Intelligent conversationsPersonalized responsesEssay and content writing
📊 Productivity
(130K)
free with in-app purchases
5
Rudyard: AI Writing App
Rudyard: AI Writing App
Rudyard: AI Writing App
Focused writing app with AI
Free

This writing app offers a distraction-free editor with AI assistance to help you brainstorm, fact-check, and refine your work. It learns your unique writing style to generate content that sounds like you.

Distraction-free Markdown editorAI writing companion (Wordsmith)Personalized voice profiles (Persona)
📊 Productivity
(9)
free with in-app purchases
6
Sudowrite - AI Novel Writing
Sudowrite - AI Novel Writing
Sudowrite - AI Novel Writing
AI fiction writing & dictation
Free

This AI-powered writing assistant helps creative writers generate story ideas, write novels, and craft poetry. Improve your fiction writing anytime, anywhere with intelligent suggestions and content generation.

AI story idea generationNovel writing assistancePoetry crafting
🔧 Utilities
(349)
free with in-app purchases
7
Claude by Anthropic
Claude by Anthropic
Claude by Anthropic
AI assistant for life and work
Free

This AI assistant helps you write, research, code, and solve complex problems. It can analyze documents, code, and images, and even respond to voice commands. Expand your capabilities and tackle new projects with this intelligent thinking partner.

AI writing assistanceCoding and programming helpResearch and data insights
📊 Productivity
(226K)
free with in-app purchases
8
AI Writer: Email Letter Essay
AI Writer: Email Letter Essay
AI Writer: Email Letter Essay
AI Keyboard, Writing Assistant
Free

This app assists with all your writing needs, from emails and essays to creative content. It offers AI-powered dictation, instant content generation, and a variety of templates to overcome writer's block and enhance your writing.

AI Voice DictationInstant Content GenerationReady-to-Use Templates
🔍 Reference
(6.6K)
free with in-app purchases
9
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
10
Google Gemini
Google Gemini
Google Gemini
Your AI assistant from Google
Free

This AI assistant helps you brainstorm, create content, and simplify complex topics. It integrates with your Google apps to provide personalized assistance, plan trips, and study smarter. Upgrade for advanced features like video generation and deeper research capabilities.

Unlimited prompting with Gemini 3 FlashLive interaction via camera/screen sharingContent creation (mockups, posters, diagrams)
📊 Productivity
(2.1M)
free with in-app purchases
11
AI Writing App
AI Writing App
AI Writing App
Genius Assistant, Essay Writer
Free

This intelligent assistant helps with various tasks, including answering questions, correcting grammar, summarizing text, and translating languages. It offers immediate assistance on any specific topic you need help with.

Answer questionsCorrect grammarSummarize text
📚 Education
(60)
free with in-app purchases
12
Wordtune: AI Writing Keyboard
Wordtune: AI Writing Keyboard
Wordtune: AI Writing Keyboard
AI Writing App & Paraphrasing
Free

This AI-powered writing assistant helps you express yourself more clearly and authentically. It offers suggestions to rephrase text, generate new content, and adjust the tone and length of your writing. It works across multiple platforms, making it a versatile tool for various communication needs.

AI-powered text rewritingGenerate sentences and paragraphsAdjust tone and length
📊 Productivity
(975)
free with in-app purchases
13
Writing App for Scriveners
Writing App for Scriveners
Writing App for Scriveners
Creative Book Writing Editor
Free
$1.99 | 100% OFF

This app provides a dedicated workspace for novelists, screenwriters, and long-form journalists. It allows for non-linear composition, integrated research, visual strategy tools, and professional output compilation. Start for free and upgrade for unlimited projects and features.

Non-linear compositionIntegrated research hubVisual strategy tools
🔧 Utilities
(9)
freemium
14
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
AI Assistant built on GPT-5.6
Free

This AI assistant offers advanced capabilities for writing, research, and image generation. It leverages multiple powerful AI models to provide deep insights, create content, and simplify tasks. Ideal for students, professionals, and creatives seeking enhanced productivity.

AI Image GeneratorAI Writing AssistantDeep Research with Sources
📊 Productivity
(166K)
free with in-app purchases
15
Friday AI Email Writer
Friday AI Email Writer
Friday AI Email Writer
PRO Letter, Mail & Text Writer
Free

This AI-powered writing assistant helps you craft better emails, letters, and messages. It offers personalized suggestions, proofreading, and grammar checking to enhance your writing speed and efficiency. Ideal for students, professionals, and anyone seeking to improve their communication.

AI-powered writing suggestionsProofreading and grammar checkingLetter and email composition
📊 Productivity
(9.7K)
free with in-app purchases
16
Write This - AI Text Generator
Write This - AI Text Generator
Write This - AI Text Generator
Messsage Chatbot Assistant
Free

This AI-powered writing assistant helps generate text completions based on your prompts. It offers suggestions for ideas and topics, making it ideal for homework assignments or overcoming writer's block. Choose from templates or start fresh and let the app create your content.

AI text generationPrompt-based completionsIdea and topic suggestions
🔍 Reference
(2.6K)
subscription
17
Chat AI: Writing Assistant Bot
Chat AI: Writing Assistant Bot
Chat AI: Writing Assistant Bot
Homework, Essays, Art & Ideas
Free

This AI-powered assistant helps you brainstorm, write, and create content. It offers features for essays, emails, translations, homework help, and even AI art generation. Get fast, accurate, and context-aware responses for everyday and professional use.

Essay and email writingText rewriting and improvementLanguage translation and grammar
📊 Productivity
(111)
free with in-app purchases
18
AI ChatBot – Smart Assistant
AI ChatBot – Smart Assistant
AI ChatBot – Smart Assistant
Chat with Helper, Ask Anything
Free

This AI-powered assistant helps organize tasks, create content, and learn new things. It offers features for text processing, travel planning, recipe suggestions, and personalized study plans to simplify daily life.

AI-powered task organizationAdvanced text processing and writing assistancePersonalized travel guide and recommendations
📊 Productivity
(19)
free with in-app purchases
19
Writely - AI Keyboard & Writer
Writely - AI Keyboard & Writer
Writely - AI Keyboard & Writer
Grammar Check & Paraphrase App
Free

Enhance your writing with an AI-powered keyboard that offers grammar checking, paraphrasing, and sentence completion. It can also transform text into poems and suggest emojis, making communication smoother and more creative.

AI writing assistantGrammar and spelling checkMessage paraphrasing
📊 Productivity
(1.6K)
free with in-app purchases
20
Fortelling - Story Writing App
Fortelling - Story Writing App
Fortelling - Story Writing App
Book & novel: world plotting
Free

This app helps novelists plot and write their books by organizing story elements like characters, locations, and items. It offers tools for world-building, real-time collaboration, and writing statistics, along with weekly challenges to inspire creativity.

Advanced plotting toolsWorld-building for fictional universesStory element organization
📊 Productivity
(988)
free with in-app purchases

FAQ about AI Writing App

What is the best ai writing app for iPhone?
Grammarly: AI Keyboard & Notes tops our ai writing app ranking as of July 2026, with a 4.7-star average from 221K App Store ratings, and it's free to download.
Yes — 20 of the top ai writing app we rank are free to download, including Grammarly: AI Keyboard & Notes and ChatGPT.
Grammarly: AI Keyboard & Notes has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 246+ ai writing 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.

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