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Best Writing Assistant Tool Apps

235+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated June 2026

From beginner-friendly picks to power-user tools, our writing assistant tool list covers 235+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Writing Assistant Tool

Quillbot-AI Writing & Keyboard#1

Quillbot-AI Writing & Keyboard by QuillBot, a Learneo Inc. business

Paraphrase & Grammar Check App
Editor's Choice
📊 Productivity
4.7😐(2.7K ratings)
FreeAdsIn-App Purchases
Quillbot-AI Writing & Keyboard screenshot 1
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Quillbot-AI Writing & Keyboard screenshot 4
Quillbot-AI Writing & Keyboard screenshot 5
Quillbot-AI Writing & Keyboard screenshot 6

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.

What We Love

  • 🚀 Helpful paraphrasing tool
  • 👍 Convenient keyboard integration
  • 💡 Useful for writing and editing
  • 👍 Improves writing quality

Room to Improve

  • 🐛 Buggy keyboard and app performance
  • 🔒 Difficult to cancel subscription
  • 👎 Limited features compared to website
DeepSeek - AI Assistant#2

DeepSeek - AI Assistant by Hangzhou DeepSeek Artificial Intelligence Co., Ltd

Intelligent AI Assistant
Strong Contender
📊 Productivity
4.0😊(11K ratings)
Free
#34in Productivity
DeepSeek - AI Assistant screenshot 1
DeepSeek - AI Assistant screenshot 2
DeepSeek - AI Assistant screenshot 3
DeepSeek - AI Assistant screenshot 4
DeepSeek - AI Assistant screenshot 5

This AI assistant offers free, intelligent help powered by a cutting-edge model. It provides rapid responses and advanced capabilities to enhance problem-solving and daily efficiency.

What We Love

  • 🚀 Fast and responsive
  • 👍 User-friendly interface
  • 💡 Powerful AI capabilities
  • 🤖 Impressive reasoning and thought process

Room to Improve

  • 🤖 Censorship and bias in responses
  • 🔌 Server overload and slow response times
  • 🔒 Privacy concerns regarding data collection
ParagraphAI: Writer & Keyboard#3

ParagraphAI: Writer & Keyboard by ParagraphAI Inc.

AI Writing: Email, Essay, Text
Worth Considering
📊 Productivity
4.8😐(2.5K ratings)
FreeAdsIn-App Purchases
ParagraphAI: Writer & Keyboard screenshot 1
ParagraphAI: Writer & Keyboard screenshot 2
ParagraphAI: Writer & Keyboard screenshot 3
ParagraphAI: Writer & Keyboard screenshot 4
ParagraphAI: Writer & Keyboard screenshot 5
ParagraphAI: Writer & Keyboard screenshot 6

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.

What We Love

  • 🚀 Powerful writing assistant
  • 👍 Helpful for improving writing quality
  • 🚀 Saves time on writing tasks
  • 🚀 Generates professional-sounding content

Room to Improve

  • 🐛 Frequent crashes and glitches
  • 💰 Expensive subscription
  • 🔒 Data privacy concerns

More Writing Assistant Tool apps to explore

4
Shadowsearch: AI Assistant
Shadowsearch: AI Assistant
Shadowsearch: AI Assistant
Shadow Search, Explore More
Free

This AI-powered assistant simplifies online people searches by scanning multiple platforms simultaneously. Discover social media profiles, publicly available records, and other relevant online information quickly and efficiently from a single interface.

AI-powered people searchSocial media profile lookupCross-platform discovery
🌟 Lifestyle
(3.8K)
freemium
5
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
(960)
free with in-app purchases
6
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
(187K)
free with in-app purchases
7
Werdsmith: Writing App
Werdsmith: Writing App
Werdsmith: Writing App
Write poetry, scripts, books
Free

This app transforms your devices into a writing studio, helping you overcome writer's block with AI-powered suggestions and build a consistent writing practice. It automatically handles formatting, allowing you to focus on your creative process.

AI-powered writing suggestionsDaily writing practice builderAutomatic formatting
📊 Productivity
(7.8K)
freemium
8
AI Assistant: Images & Writing
AI Assistant: Images & Writing
AI Assistant: Images & Writing
ChatGPT, Chatbot, Chat, Photos
Free

This AI-powered assistant helps you boost productivity by generating and editing images, drafting documents, and answering questions. It acts as a writing assistant, study partner, and research tool, transforming text prompts into artwork and identifying objects in photos.

AI-powered image editing and creationText-to-image generation with FLUX.1 KontextDocument analysis and review with DocsAI
📊 Productivity
(6.6K)
free with in-app purchases
9
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
(6.5K)
free with in-app purchases
10
AI Writer - Writing Assistant
AI Writer - Writing Assistant
AI Writer - Writing Assistant
Smart Chatbot Powered by GPT 5
Free

This AI-powered writing assistant helps you generate various types of text, from essays and emails to creative content and code. It also offers web search, summarization, translation, and grammar correction to enhance your writing and research process.

AI writing assistant for essays, emails, blogsAI search mode for real-time web answersSummarizer and rewriter for text
📊 Productivity
(1.1K)
free with in-app purchases
11
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
12
AI Writer Assistant - Lek
AI Writer Assistant - Lek
AI Writer Assistant - Lek
Chatbot and Image Generator
Free

This AI-powered writing assistant helps users generate various types of content, from emails and ad copy to lyrics and SEO meta descriptions. It simplifies writing tasks with an easy-to-use interface and supports multiple languages.

AI content generationEmail writingAd copy creation
📊 Productivity
(75)
free with in-app purchases
13
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
(890)
free with in-app purchases
14
Grammarly: AI Keyboard & Notes
Grammarly: AI Keyboard & Notes
Grammarly: AI Keyboard & Notes
Chats, emails, work and study
Free

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.

Real-time grammar and spelling suggestionsAI-powered text rewritesTone detection and transformation
📊 Productivity
(218K)
freemium
15
AI Tools, AI Writing Assistant
AI Tools, AI Writing Assistant
AI Tools, AI Writing Assistant
AI Chat & AI Text Generation
Free

This AI-powered tool assists with content creation, homework help, and conversational chat. Generate stories, poems, captions, and more, or get help with summaries, grammar, and translations. It's a versatile assistant for entertainment, learning, and work.

Content generation (stories, poems, captions)Homework and project assistanceText summarization and rephrasing
📊 Productivity
(23)
freemium
16
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
17
Scrivener
Scrivener
Scrivener
by Literature & Latte
$23.99

This app is a comprehensive writing tool designed for long-form manuscripts. It allows users to compose text in any order, manage research materials alongside their writing, and export to various formats. It supports flexible outlining and restructuring of content.

Manuscript composition in sectionsResearch material integrationFlexible outlining and reorganization
📊 Productivity
(2.5K)
paid
18
AI Chatbot
AI Chatbot
AI Chatbot
AI Chat, open, assistant, pro
Free

This app offers an advanced AI-powered chat and writing assistant. It understands natural language for real-time conversations and helps craft professional emails, messages, and other written content with ease and precision.

AI chat bot for natural language conversationsReal-time responsesWriting assistant for emails and messages
📊 Productivity
(2.8K)
free with in-app purchases
19
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
(9.6K)
free with in-app purchases
20
ChatGPT
ChatGPT
ChatGPT
The official app by OpenAI
Free

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.

Image generation from textAdvanced voice conversationsPhoto upload and transcription
📊 Productivity
(8.1M)
free with in-app purchases