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Mathias MichelJune 2Use Case
Turn Rough Prompts Into Clear Instructions
RewriteBar is a macOS menu bar app for prompt rewriting. Select text in any app, run Improve Prompt or Strengthen Prompt, then paste the result into ChatGPT, Gemini, or another AI chat. It also helps when you dictate rough ideas and need a professional prompt fast.
25 MB • Mac Intel & Apple Silicon • macOS 13.0+ (Ventura)
🌐 500+ Languages
🤖 Local Models
🔍 PopClip Integration
✅ Fix Grammar
🎯 Custom Workflows
Sound Familiar?
Common writing bottlenecks this solves
You send vague prompts and get weak output
Quick prompts often miss context, constraints, or format. You end up regenerating instead of getting a good first answer.
Voice dictation sounds casual or messy
Dictating is fast, but the wording is often loose. You need clean, structured instructions before sending to AI.
You switch between many AI surfaces
You use ChatGPT, Gemini in Google Workspace, and other tools. You need one prompt workflow that works everywhere.
How It Works
A simple flow to get better results
1
Draft or dictate your intent
Write your rough request in any app, like Notes, Docs, or email. A short draft is enough.
2
Run Improve Prompt in RewriteBar
Select the text, trigger RewriteBar, and choose Improve Prompt or Strengthen Prompt. RewriteBar adds structure and clear requirements.
3
Paste into ChatGPT, Gemini, or any AI
Copy the improved prompt and send it where you work. Same flow across standalone and integrated AI chats.
Before & After
Real rewrites you can apply in seconds
Quick draft → clear prompt
Before
summarize a long PR description
After
You are a technical writer. Summarize this PR description in 3 to 5 bullet points. Keep technical terms. Return Markdown only. Do not add opinions.
Voice dictation → professional
Before
can you make this sound more formal and like a proper prompt
After
Rewrite this into a clear, formal prompt. Use direct instructions and a neutral tone. Keep the original intent and key terms. Return plain text only.
Tone
Before
rewrite copy in a friendly tone
After
Rewrite this text in a friendly, conversational tone. Keep the meaning and similar length. Preserve product names and links. Return plain text only.
Translation
Before
translate product UI to French
After
Translate these product UI strings into French using formal "vous". Keep placeholders like {count} unchanged. Return only translated strings, one per line.
Related Commands
Try these in RewriteBar or the Prompt Library
Prompting
Strengthen Prompt
Remove filler words, weak phrasing, and vague instructions to make prompts direct, specific, and actionable.
promptprompting+3 more
Prompting
Improve Prompt
Generate a ChatGPT prompt based on a topic, starting with 'I want you to act as', and expand the prompt to make it useful.
promptimprove+2 more
Prompting
Few-Shot Example Builder
Append high-quality few-shot examples to an existing prompt based on its role, task, and instructions.
promptfew-shot+3 more
Prompting
Prompt Injection Guard
Harden prompts with input-safety and instruction-isolation rules to reduce prompt injection risk.
promptsecurity+3 more
The Smartest AI.
With Total Privacy.
Choose from 500+ models across 37+ AI providers - including local options like Ollama and Apple Intelligence.
OpenAI
GPT-5, GPT-4.1, GPT-4o, ...
Ollama
gpt-oss, Llama 3, Phi-4, ...
OpenRouter
Includes 350+ Models
XAI
Grok 4, Grok 4 fast, Grok 3
LM Studio
Llama 3, gpt-oss, qwen, ...
Baseten
OpenAI-compatible endpoint
Fireworks AI
OpenAI-compatible endpoint
MiniMax
OpenAI-compatible endpoint
ZenMux
OpenAI-compatible gateway
OpenAI
GPT-5, GPT-4.1, GPT-4o, ...
Ollama
gpt-oss, Llama 3, Phi-4, ...
OpenRouter
Includes 350+ Models
XAI
Grok 4, Grok 4 fast, Grok 3
LM Studio
Llama 3, gpt-oss, qwen, ...
Baseten
OpenAI-compatible endpoint
Fireworks AI
OpenAI-compatible endpoint
MiniMax
OpenAI-compatible endpoint
ZenMux
OpenAI-compatible gateway
OpenAI
GPT-5, GPT-4.1, GPT-4o, ...
Ollama
gpt-oss, Llama 3, Phi-4, ...
OpenRouter
Includes 350+ Models
XAI
Grok 4, Grok 4 fast, Grok 3
LM Studio
Llama 3, gpt-oss, qwen, ...
Baseten
OpenAI-compatible endpoint
Fireworks AI
OpenAI-compatible endpoint
MiniMax
OpenAI-compatible endpoint
ZenMux
OpenAI-compatible gateway
OpenAI
GPT-5, GPT-4.1, GPT-4o, ...
Ollama
gpt-oss, Llama 3, Phi-4, ...
OpenRouter
Includes 350+ Models
XAI
Grok 4, Grok 4 fast, Grok 3
LM Studio
Llama 3, gpt-oss, qwen, ...
Baseten
OpenAI-compatible endpoint
Fireworks AI
OpenAI-compatible endpoint
MiniMax
OpenAI-compatible endpoint
ZenMux
OpenAI-compatible gateway
Anthropic
Claude 4, Claude 3.7, Claude 3.5
Groq
GPT-oss, Llama 3.2, ...
Perplexity
Sonar
TogetherAI
GPT-5.x, Grok, Llama, Mistral, ...
Apple Intelligence
Apple Foundation Model
Cloudflare AI Gateway
OpenAI-compatible gateway
Hugging Face
Inference Providers
Nebius Token Factory
OpenAI-compatible endpoint
Cerebras
OpenAI-compatible endpoint
Anthropic
Claude 4, Claude 3.7, Claude 3.5
Groq
GPT-oss, Llama 3.2, ...
Perplexity
Sonar
TogetherAI
GPT-5.x, Grok, Llama, Mistral, ...
Apple Intelligence
Apple Foundation Model
Cloudflare AI Gateway
OpenAI-compatible gateway
Hugging Face
Inference Providers
Nebius Token Factory
OpenAI-compatible endpoint
Cerebras
OpenAI-compatible endpoint
Anthropic
Claude 4, Claude 3.7, Claude 3.5
Groq
GPT-oss, Llama 3.2, ...
Perplexity
Sonar
TogetherAI
GPT-5.x, Grok, Llama, Mistral, ...
Apple Intelligence
Apple Foundation Model
Cloudflare AI Gateway
OpenAI-compatible gateway
Hugging Face
Inference Providers
Nebius Token Factory
OpenAI-compatible endpoint
Cerebras
OpenAI-compatible endpoint
Anthropic
Claude 4, Claude 3.7, Claude 3.5
Groq
GPT-oss, Llama 3.2, ...
Perplexity
Sonar
TogetherAI
GPT-5.x, Grok, Llama, Mistral, ...
Apple Intelligence
Apple Foundation Model
Cloudflare AI Gateway
OpenAI-compatible gateway
Hugging Face
Inference Providers
Nebius Token Factory
OpenAI-compatible endpoint
Cerebras
OpenAI-compatible endpoint
Gemini 2.5 Pro, 2.0 Flash, ...
DeepSeek
DeepSeek V3, R1, ...
Mistral
Pixtral Large, Mistral 7B, ...
Azure AI Foundry
GPT-5.x, GPT-5.4-nano, ...
302.AI
OpenAI-compatible endpoint
DeepInfra
Llama, Qwen, Mixtral, ...
Moonshot AI
Kimi
Vercel AI Gateway
OpenAI-compatible gateway
Gemini 2.5 Pro, 2.0 Flash, ...
DeepSeek
DeepSeek V3, R1, ...
Mistral
Pixtral Large, Mistral 7B, ...
Azure AI Foundry
GPT-5.x, GPT-5.4-nano, ...
302.AI
OpenAI-compatible endpoint
DeepInfra
Llama, Qwen, Mixtral, ...
Moonshot AI
Kimi
Vercel AI Gateway
OpenAI-compatible gateway
Gemini 2.5 Pro, 2.0 Flash, ...
DeepSeek
DeepSeek V3, R1, ...
Mistral
Pixtral Large, Mistral 7B, ...
Azure AI Foundry
GPT-5.x, GPT-5.4-nano, ...
302.AI
OpenAI-compatible endpoint
DeepInfra
Llama, Qwen, Mixtral, ...
Moonshot AI
Kimi
Vercel AI Gateway
OpenAI-compatible gateway
Gemini 2.5 Pro, 2.0 Flash, ...
DeepSeek
DeepSeek V3, R1, ...
Mistral
Pixtral Large, Mistral 7B, ...
Azure AI Foundry
GPT-5.x, GPT-5.4-nano, ...
302.AI
OpenAI-compatible endpoint
DeepInfra
Llama, Qwen, Mixtral, ...
Moonshot AI
Kimi
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 GPT-4 and GPT-4-mini 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. Unlike Apple Intelligence (as of Oct. 2024), 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.
- Yes. RewriteBar works anywhere you can select text on macOS. Improve prompts in Gmail, Docs, or Notes, then paste into Gemini or another AI.
- Yes. Dictate your rough idea, select it, and run Improve Prompt. RewriteBar turns casual wording into clearer instructions ready for AI.
- Any rough request you plan to send to AI: one sentence, bullet points, or dictated text. RewriteBar turns it into a structured prompt.
- Yes. It can add role, constraints, formatting, and clearer steps so the model gets better instructions.
- Yes. RewriteBar works from any macOS app where text can be selected. Select, run command, paste result.
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Mathias MichelMarch 12Improve Prompts Before You Hit Send
Download RewriteBar free and write clearer prompts for ChatGPT, Gemini, and other AI tools from any app.
Get 35,000 free credits • No credit card required • App size: 25 MB
