--- title: "Daily Writing with AI | Emails, Posts & Docs | RewriteBar" description: "RewriteBar helps you fix grammar, adjust tone, and shorten or expand text in any app. Improve daily writing in Mail, Slack, Notion, and more." url: "https://rewritebar.com/use-cases/daily-writing" --- Use Case # Fix Grammar and Tone in Any App RewriteBar is a macOS menu bar app for everyday writing edits. Select text in Mail, Slack, Notion, or your CMS, run a command, and paste the improved version back in seconds. [Download RewriteBar Free](https://rewritebar.com/start-free) 25 MB • Mac Intel & Apple Silicon • macOS 13.0+ (Ventura) 🌐 500+ Languages ![Transform your writing in any application with AI assistance](https://rewritebar.com/_next/image?url=%2F_next%2Fstatic%2Fimmutable%2Fmedia%2FHeroImage.40hjg74gidry9.jpg&w=3840&q=75) 🤖 Local Models 🔍 PopClip Integration ✅ Fix Grammar 🎯 Custom Workflows ## Sound Familiar? Common writing bottlenecks this solves ### You notice mistakes after you send Small grammar issues hurt clarity. You want quick fixes before sending, without opening a separate editor. ### The tone does not fit the channel A draft can be too formal for Slack or too casual for clients. You need fast tone adjustments in place. ### Draft length is off Some messages need tightening, others need more context. You want to shorten or expand text quickly. ## How It Works A simple flow to get better results 1 ### Select your text Highlight a sentence, paragraph, or post in the app where you are already writing. 2 ### Run a RewriteBar command Choose Fix Grammar & Spelling, Change Tone, Summarize, Make Shorter, or another command. 3 ### Paste and send Paste the polished text back and keep moving. Same workflow in every app. ## Before & After Real rewrites you can apply in seconds Grammar Before We need to discus the project timeline and whos responsible for each deliverable. After We need to discuss the project timeline and who’s responsible for each deliverable. Tone: more formal Before Hey, just checking if you had a chance to look at the doc. Let me know when you can. After I’m following up to see if you’ve had a chance to review the document. Please let me know when you’re available to discuss. Shorten Before I wanted to reach out because I thought it would be good to schedule a quick call so we can go over the details and align on next steps. After Let’s schedule a short call to align on next steps. ## Related Commands Try these in RewriteBar or the Prompt Library [WritingFix Grammar & SpellingAnalyze text for grammar, punctuation, spelling, and sentence structure. Provide corrections to make the text fluent and accurate, replying only with the corrected text in the same language.grammarcorrection+2 more](https://rewritebar.com/prompts/fix-grammar-spelling)[WritingImprove WritingRephrase text to improve clarity and quality, fixing mistakes while keeping the original language and length. Returns improved text only.writingimprove+2 more](https://rewritebar.com/prompts/improve-writing)[RewriteChange ToneAdjust the tone of the text to a specified style, keeping the language and meaning the same.tonerewrite+2 more](https://rewritebar.com/prompts/change-tone)[RewriteSummarizeSummarize the provided text in 3-4 sentences, keeping language and meaning the same.summarizesummary+2 more](https://rewritebar.com/prompts/summarize)[RewriteMake ShorterShorten the provided text by removing unnecessary details, keeping language and meaning the same.shortenconcise+2 more](https://rewritebar.com/prompts/make-shorter)[WritingSimplify LanguageSimplify text to make it more concise and easier to understand, while keeping the original meaning and language.simplifyclarity+2 more](https://rewritebar.com/prompts/simplify-language) [Browse Prompt Library](https://rewritebar.com/prompts) ## The Smartest AI. With Total Privacy. Choose from 500+ models across 38+ AI providers - including local options like Ollama and Apple Intelligence. ![openai.svg logo](https://rewritebar.com/assets/app-logos/openai.svg) OpenAI GPT-5.5, GPT-6 Sol, GPT-6.1 Sol, ... ![ollama.svg logo](https://rewritebar.com/assets/app-logos/ollama.svg) Ollama gpt-oss, Llama 3, Phi-4, ... ![openrouter.svg logo](https://rewritebar.com/assets/app-logos/openrouter.svg) OpenRouter Includes 350+ Models ![xai.svg logo](https://rewritebar.com/assets/app-logos/xai.svg) XAI Grok 4.6, Grok 4.5, Grok 4.3 ![lmstudio.svg logo](https://rewritebar.com/assets/app-logos/lmstudio.svg) LM Studio Llama 3, gpt-oss, qwen, ... ![baseten.svg logo](https://rewritebar.com/assets/app-logos/baseten.svg) Baseten OpenAI-compatible endpoint ![fireworks.svg logo](https://rewritebar.com/assets/app-logos/fireworks.svg) Fireworks AI OpenAI-compatible endpoint ![minimax.svg logo](https://rewritebar.com/assets/app-logos/minimax.svg) MiniMax OpenAI-compatible endpoint ![zenmux.svg logo](https://rewritebar.com/assets/app-logos/zenmux.svg) ZenMux OpenAI-compatible gateway ![openai.svg logo](https://rewritebar.com/assets/app-logos/openai.svg) OpenAI GPT-5.5, GPT-6 Sol, GPT-6.1 Sol, ... ![ollama.svg logo](https://rewritebar.com/assets/app-logos/ollama.svg) Ollama gpt-oss, Llama 3, Phi-4, ... ![openrouter.svg logo](https://rewritebar.com/assets/app-logos/openrouter.svg) OpenRouter Includes 350+ Models ![xai.svg logo](https://rewritebar.com/assets/app-logos/xai.svg) XAI Grok 4.6, Grok 4.5, Grok 4.3 ![lmstudio.svg logo](https://rewritebar.com/assets/app-logos/lmstudio.svg) LM Studio Llama 3, gpt-oss, qwen, ... ![baseten.svg logo](https://rewritebar.com/assets/app-logos/baseten.svg) Baseten OpenAI-compatible endpoint ![fireworks.svg logo](https://rewritebar.com/assets/app-logos/fireworks.svg) Fireworks AI OpenAI-compatible endpoint ![minimax.svg logo](https://rewritebar.com/assets/app-logos/minimax.svg) MiniMax OpenAI-compatible endpoint ![zenmux.svg logo](https://rewritebar.com/assets/app-logos/zenmux.svg) ZenMux OpenAI-compatible gateway ![openai.svg logo](https://rewritebar.com/assets/app-logos/openai.svg) OpenAI GPT-5.5, GPT-6 Sol, GPT-6.1 Sol, ... ![ollama.svg logo](https://rewritebar.com/assets/app-logos/ollama.svg) Ollama gpt-oss, Llama 3, Phi-4, ... ![openrouter.svg logo](https://rewritebar.com/assets/app-logos/openrouter.svg) OpenRouter Includes 350+ Models ![xai.svg logo](https://rewritebar.com/assets/app-logos/xai.svg) XAI Grok 4.6, Grok 4.5, Grok 4.3 ![lmstudio.svg logo](https://rewritebar.com/assets/app-logos/lmstudio.svg) LM Studio Llama 3, gpt-oss, qwen, ... ![baseten.svg logo](https://rewritebar.com/assets/app-logos/baseten.svg) Baseten OpenAI-compatible endpoint ![fireworks.svg logo](https://rewritebar.com/assets/app-logos/fireworks.svg) Fireworks AI OpenAI-compatible endpoint ![minimax.svg logo](https://rewritebar.com/assets/app-logos/minimax.svg) MiniMax OpenAI-compatible endpoint ![zenmux.svg logo](https://rewritebar.com/assets/app-logos/zenmux.svg) ZenMux OpenAI-compatible gateway ![openai.svg logo](https://rewritebar.com/assets/app-logos/openai.svg) OpenAI GPT-5.5, GPT-6 Sol, GPT-6.1 Sol, ... ![ollama.svg logo](https://rewritebar.com/assets/app-logos/ollama.svg) Ollama gpt-oss, Llama 3, Phi-4, ... ![openrouter.svg logo](https://rewritebar.com/assets/app-logos/openrouter.svg) OpenRouter Includes 350+ Models ![xai.svg logo](https://rewritebar.com/assets/app-logos/xai.svg) XAI Grok 4.6, Grok 4.5, Grok 4.3 ![lmstudio.svg logo](https://rewritebar.com/assets/app-logos/lmstudio.svg) LM Studio Llama 3, gpt-oss, qwen, ... ![baseten.svg logo](https://rewritebar.com/assets/app-logos/baseten.svg) Baseten OpenAI-compatible endpoint ![fireworks.svg logo](https://rewritebar.com/assets/app-logos/fireworks.svg) Fireworks AI OpenAI-compatible endpoint ![minimax.svg logo](https://rewritebar.com/assets/app-logos/minimax.svg) MiniMax OpenAI-compatible endpoint ![zenmux.svg logo](https://rewritebar.com/assets/app-logos/zenmux.svg) ZenMux OpenAI-compatible gateway ![anthropic.svg logo](https://rewritebar.com/assets/app-logos/anthropic.svg) Anthropic Claude Haiku 4.5, Claude Haiku 5.5, Claude Sonnet 4.5, ... ![groq.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fgroq.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Groq GPT-oss, Llama 3.2, ... ![perplexity.svg logo](https://rewritebar.com/assets/app-logos/perplexity.svg) Perplexity Sonar ![togetherai.svg logo](https://rewritebar.com/assets/app-logos/togetherai.svg) TogetherAI GPT-5.x, Grok, Llama, Mistral, ... ![apple-intelligence.svg logo](https://rewritebar.com/assets/app-logos/apple-intelligence.svg) Apple Intelligence Apple Foundation Model ![cloudflare.svg logo](https://rewritebar.com/assets/app-logos/cloudflare.svg) Cloudflare AI Gateway OpenAI-compatible gateway ![huggingface.svg logo](https://rewritebar.com/assets/app-logos/huggingface.svg) Hugging Face Inference Providers ![nebius.svg logo](https://rewritebar.com/assets/app-logos/nebius.svg) Nebius Token Factory OpenAI-compatible endpoint ![cerebras.svg logo](https://rewritebar.com/assets/app-logos/cerebras.svg) Cerebras OpenAI-compatible endpoint ![anthropic.svg logo](https://rewritebar.com/assets/app-logos/anthropic.svg) Anthropic Claude Haiku 4.5, Claude Haiku 5.5, Claude Sonnet 4.5, ... ![groq.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fgroq.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Groq GPT-oss, Llama 3.2, ... ![perplexity.svg logo](https://rewritebar.com/assets/app-logos/perplexity.svg) Perplexity Sonar ![togetherai.svg logo](https://rewritebar.com/assets/app-logos/togetherai.svg) TogetherAI GPT-5.x, Grok, Llama, Mistral, ... ![apple-intelligence.svg logo](https://rewritebar.com/assets/app-logos/apple-intelligence.svg) Apple Intelligence Apple Foundation Model ![cloudflare.svg logo](https://rewritebar.com/assets/app-logos/cloudflare.svg) Cloudflare AI Gateway OpenAI-compatible gateway ![huggingface.svg logo](https://rewritebar.com/assets/app-logos/huggingface.svg) Hugging Face Inference Providers ![nebius.svg logo](https://rewritebar.com/assets/app-logos/nebius.svg) Nebius Token Factory OpenAI-compatible endpoint ![cerebras.svg logo](https://rewritebar.com/assets/app-logos/cerebras.svg) Cerebras OpenAI-compatible endpoint ![anthropic.svg logo](https://rewritebar.com/assets/app-logos/anthropic.svg) Anthropic Claude Haiku 4.5, Claude Haiku 5.5, Claude Sonnet 4.5, ... ![groq.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fgroq.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Groq GPT-oss, Llama 3.2, ... ![perplexity.svg logo](https://rewritebar.com/assets/app-logos/perplexity.svg) Perplexity Sonar ![togetherai.svg logo](https://rewritebar.com/assets/app-logos/togetherai.svg) TogetherAI GPT-5.x, Grok, Llama, Mistral, ... ![apple-intelligence.svg logo](https://rewritebar.com/assets/app-logos/apple-intelligence.svg) Apple Intelligence Apple Foundation Model ![cloudflare.svg logo](https://rewritebar.com/assets/app-logos/cloudflare.svg) Cloudflare AI Gateway OpenAI-compatible gateway ![huggingface.svg logo](https://rewritebar.com/assets/app-logos/huggingface.svg) Hugging Face Inference Providers ![nebius.svg logo](https://rewritebar.com/assets/app-logos/nebius.svg) Nebius Token Factory OpenAI-compatible endpoint ![cerebras.svg logo](https://rewritebar.com/assets/app-logos/cerebras.svg) Cerebras OpenAI-compatible endpoint ![anthropic.svg logo](https://rewritebar.com/assets/app-logos/anthropic.svg) Anthropic Claude Haiku 4.5, Claude Haiku 5.5, Claude Sonnet 4.5, ... ![groq.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fgroq.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Groq GPT-oss, Llama 3.2, ... ![perplexity.svg logo](https://rewritebar.com/assets/app-logos/perplexity.svg) Perplexity Sonar ![togetherai.svg logo](https://rewritebar.com/assets/app-logos/togetherai.svg) TogetherAI GPT-5.x, Grok, Llama, Mistral, ... ![apple-intelligence.svg logo](https://rewritebar.com/assets/app-logos/apple-intelligence.svg) Apple Intelligence Apple Foundation Model ![cloudflare.svg logo](https://rewritebar.com/assets/app-logos/cloudflare.svg) Cloudflare AI Gateway OpenAI-compatible gateway ![huggingface.svg logo](https://rewritebar.com/assets/app-logos/huggingface.svg) Hugging Face Inference Providers ![nebius.svg logo](https://rewritebar.com/assets/app-logos/nebius.svg) Nebius Token Factory OpenAI-compatible endpoint ![cerebras.svg logo](https://rewritebar.com/assets/app-logos/cerebras.svg) Cerebras OpenAI-compatible endpoint ![google.svg logo](https://rewritebar.com/assets/app-logos/google.svg) Google Gemini 4 Hydrogen, Gemini 4 Carbon, Gemini 4 Argon, ... ![deepseek.svg logo](https://rewritebar.com/assets/app-logos/deepseek.svg) DeepSeek DeepSeek V3, R1, ... ![mistralai.svg logo](https://rewritebar.com/assets/app-logos/mistralai.svg) Mistral Pixtral Large, Mistral 7B, ... ![azure.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fazure.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Azure AI Foundry GPT-5.x, GPT-5.4-nano, ... ![ai302.svg logo](https://rewritebar.com/assets/app-logos/ai302.svg) 302.AI OpenAI-compatible endpoint ![deepinfra.svg logo](https://rewritebar.com/assets/app-logos/deepinfra.svg) DeepInfra Llama, Qwen, Mixtral, ... ![moonshot.svg logo](https://rewritebar.com/assets/app-logos/moonshot.svg) Moonshot AI Kimi ![vercel.svg logo](https://rewritebar.com/assets/app-logos/vercel.svg) Vercel AI Gateway OpenAI-compatible gateway ![google.svg logo](https://rewritebar.com/assets/app-logos/google.svg) Google Gemini 4 Hydrogen, Gemini 4 Carbon, Gemini 4 Argon, ... ![deepseek.svg logo](https://rewritebar.com/assets/app-logos/deepseek.svg) DeepSeek DeepSeek V3, R1, ... ![mistralai.svg logo](https://rewritebar.com/assets/app-logos/mistralai.svg) Mistral Pixtral Large, Mistral 7B, ... ![azure.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fazure.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Azure AI Foundry GPT-5.x, GPT-5.4-nano, ... ![ai302.svg logo](https://rewritebar.com/assets/app-logos/ai302.svg) 302.AI OpenAI-compatible endpoint ![deepinfra.svg logo](https://rewritebar.com/assets/app-logos/deepinfra.svg) DeepInfra Llama, Qwen, Mixtral, ... ![moonshot.svg logo](https://rewritebar.com/assets/app-logos/moonshot.svg) Moonshot AI Kimi ![vercel.svg logo](https://rewritebar.com/assets/app-logos/vercel.svg) Vercel AI Gateway OpenAI-compatible gateway ![google.svg logo](https://rewritebar.com/assets/app-logos/google.svg) Google Gemini 4 Hydrogen, Gemini 4 Carbon, Gemini 4 Argon, ... ![deepseek.svg logo](https://rewritebar.com/assets/app-logos/deepseek.svg) DeepSeek DeepSeek V3, R1, ... ![mistralai.svg logo](https://rewritebar.com/assets/app-logos/mistralai.svg) Mistral Pixtral Large, Mistral 7B, ... ![azure.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fazure.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Azure AI Foundry GPT-5.x, GPT-5.4-nano, ... ![ai302.svg logo](https://rewritebar.com/assets/app-logos/ai302.svg) 302.AI OpenAI-compatible endpoint ![deepinfra.svg logo](https://rewritebar.com/assets/app-logos/deepinfra.svg) DeepInfra Llama, Qwen, Mixtral, ... ![moonshot.svg logo](https://rewritebar.com/assets/app-logos/moonshot.svg) Moonshot AI Kimi ![vercel.svg logo](https://rewritebar.com/assets/app-logos/vercel.svg) Vercel AI Gateway OpenAI-compatible gateway ![google.svg logo](https://rewritebar.com/assets/app-logos/google.svg) Google Gemini 4 Hydrogen, Gemini 4 Carbon, Gemini 4 Argon, ... ![deepseek.svg logo](https://rewritebar.com/assets/app-logos/deepseek.svg) DeepSeek DeepSeek V3, R1, ... ![mistralai.svg logo](https://rewritebar.com/assets/app-logos/mistralai.svg) Mistral Pixtral Large, Mistral 7B, ... ![azure.png logo](https://rewritebar.com/_next/image?url=%2Fassets%2Fapp-logos%2Fazure.png&w=256&q=75&dpl=dpl_DiN8FjoxUzBJQiXB6cguQxn5NPC3) Azure AI Foundry GPT-5.x, GPT-5.4-nano, ... ![ai302.svg logo](https://rewritebar.com/assets/app-logos/ai302.svg) 302.AI OpenAI-compatible endpoint ![deepinfra.svg logo](https://rewritebar.com/assets/app-logos/deepinfra.svg) DeepInfra Llama, Qwen, Mixtral, ... ![moonshot.svg logo](https://rewritebar.com/assets/app-logos/moonshot.svg) Moonshot AI Kimi ![vercel.svg logo](https://rewritebar.com/assets/app-logos/vercel.svg) Vercel AI Gateway OpenAI-compatible gateway ## A Complete AI Writing Toolkit for macOS. Everything you need to write faster, clearer, and smarter — all in one place. ### Comprehensive Writing Tools Access a complete suite of writing tools including grammar correction, language simplification, tone adjustment, translation, text summarization, and ChatGPT prompt enhancement - all in one place. ### Custom Actions Create personalized rewrite actions tailored to your needs. Build templates for emails, social media posts, or any writing task you frequently do. ### Distraction-Free Interface Experience a clean, minimal interface that focuses on results. No cluttered windows - just select text and watch it transform instantly. ### Lifetime License Available Choose our one-time payment option to use RewriteBar forever with OpenAI integration. No recurring fees - just a single investment in your writing success. ### Quick Access Shortcuts Boost your productivity with customizable keyboard shortcuts for instant access to any feature. ### Lightweight Performance At just 25 MB, RewriteBar is incredibly lightweight yet powerful. Enjoy smooth performance without impacting your Mac's resources. ### Cutting-Edge AI Models Leverage the latest AI technology including State of the Art cloud models and local models for superior writing assistance and more accurate suggestions. ### Multiple AI Providers Choose from leading AI providers including OpenAI, Anthropic, and DeepSeek. Select the service that best fits your needs. ### Enhanced Grammar Checking Complement your existing grammar tools. RewriteBar works alongside other checkers to provide comprehensive writing improvement. ### Multilingual Support Write confidently in multiple languages including German, English, and Spanish. RewriteBar supports a wide range of languages for global communication. ### Direct AI Integration Enjoy secure, direct communication with AI providers. Your text and API keys remain private - nothing is stored on our servers. ### Local AI Support Choose complete privacy with local AI models through Ollama integration. Keep your writing assistance entirely on your machine. Frequently Asked Questions ## Your Questions, Answered Quick answers for this use case before you try it. - ### Does it work in Mail and Slack? Yes. RewriteBar works in any macOS app where text can be selected, including Mail, Slack, Notion, and browser-based editors. - ### Can I change tone without rewriting myself? Yes. Use Change Tone, Formal to Personal, or Personal to Formal to shift between professional, friendly, or casual tone. - ### What if I need to shorten or expand text? Use Make Shorter or Make Longer. For summaries, use Summarize. All commands run on selected text and return ready-to-paste output. - ### Do I need to leave the app I’m writing in? No. Trigger RewriteBar from the menu bar, a keyboard shortcut, or PopClip, then paste the result back. - ### Is it good for non-native English speakers? Yes. Fix Grammar & Spelling, Improve Writing, and Simplify Language help make text clearer and more natural. ## Improve Daily Writing Without Leaving Your Flow Download RewriteBar free and polish emails, chats, posts, and docs from any app. [Download RewriteBar (Free)](https://rewritebar.com/download) Get 35,000 free credits • No credit card required • App size: 25 MB