# Rephrase > AI-powered prompt improvement app for macOS ## Quick Answer Rephrase is a macOS menu bar app that transforms rough ideas into powerful prompts for ChatGPT, Claude, Midjourney, and Sora. Press Cmd+Shift+I on any selected text or use voice input (Cmd+Shift+U) to get an improved prompt instantly. Free tier includes 10 prompts; Pro ($9.99/month) offers unlimited access with voice input and custom skills. ## Product Overview **What it is:** A native macOS productivity app that lives in your menu bar and improves prompts for any AI tool using research-backed techniques. **Who it's for:** Anyone who uses AI tools daily - developers, writers, designers, marketers, and creators who want better results from ChatGPT, Claude, Midjourney, Sora, and other AI platforms. **Key differentiator:** Works system-wide via global hotkey, supports voice input with Whisper transcription, and auto-detects the best skill for each prompt type. ## Core Features ### Global Hotkey (Cmd+Shift+I) Select any text in any application (browser, IDE, notes, Slack, etc.) and press Cmd+Shift+I. The app captures your selection, improves it using Claude AI, and copies the result to your clipboard or pastes directly. Works across all macOS apps. ### Voice Input (Cmd+Shift+U) Press Cmd+Shift+U to start voice recording. Whisper transcribes your speech in real-time, then AI transforms it into a polished prompt. No typing required - just speak your idea naturally. ### Smart Skills Auto-Detection The app automatically detects your intent and applies the right skill: - Video prompts for Sora, Runway, Kling - Image prompts for Midjourney, DALL-E, Stable Diffusion - Professional messages for Slack, email - Social media posts for Twitter, LinkedIn - General text improvement for ChatGPT, Claude - Code prompts for development tasks - Research prompts for academic and investigation tasks - TTS prompts for text-to-speech - Music prompts for Suno (vocals + instrumentals) ### Global Instructions Set personal preferences that apply to every prompt - your brand voice, language style, or specific requirements. Ensures consistent output across all prompts. ### Custom Skills (Pro) Build your own skills with custom transformation rules. Define specific instructions for specialized workflows or team standards. ## Pricing | Plan | Price | Includes | |------|-------|----------| | Free | $0 | 10 prompts, all built-in skills, history, global instructions | | Pro | $9.99/month | Unlimited prompts, voice input, custom skills, priority support | | Lifetime | $49.99 one-time | Everything in Pro, pay once, all future updates | ## Technical Requirements - macOS 13.0 (Ventura) or later - Apple Silicon (M1/M2/M3) or Intel Mac - Internet connection required for AI processing - Accessibility permission for text selection ## How It Works 1. **Input:** Select text anywhere or speak your idea 2. **Processing:** AI analyzes context, selects optimal skill, applies prompt engineering techniques 3. **Output:** Improved prompt appears instantly, ready to paste ## Available Skills | Skill | Best For | Output Format | |-------|----------|---------------| | Text Improvement | ChatGPT, Claude, Gemini | Structured LLM prompts | | Video Prompt Generator | Sora, Runway, Kling | Cinematic scene descriptions | | Image Prompt Generator | Midjourney, DALL-E, SD | Detailed visual prompts with style tags | | Professional Slack Message | Workplace communication | Clear, professional messages | | Social Media Post | Twitter, LinkedIn | Engaging posts with hooks | | Code Prompt Generator | Development tasks | Structured coding prompts | | Research Prompt Generator | Academic research | Investigation-focused prompts | | TTS Prompt Generator | Text-to-speech | Speech-optimized text | | Suno Song | AI music with vocals | Lyrics + vocal style prompts | | Suno Instrumental | AI instrumental music | Style + structure prompts | ## Frequently Asked Questions **Is it free?** Yes, start free with 10 prompt improvements. Pro ($9.99/month) adds unlimited prompts and voice input. Lifetime ($49.99) is a one-time payment. **Does it work offline?** No, AI processing requires internet. The app runs locally but sends text to cloud for improvement. **What AI models does it support?** Creates optimized prompts for ChatGPT (GPT-4), Claude, Gemini, Midjourney, DALL-E, Sora, Runway, and more. **How do I install it?** Download DMG from the website, drag to Applications, grant Accessibility permission when prompted. ## Documentation - Getting Started: https://rephrase-it.com/docs/getting-started - Using the App: https://rephrase-it.com/docs/using-the-app - Skills Guide: https://rephrase-it.com/docs/skills - Voice Input: https://rephrase-it.com/docs/voice-input - Settings: https://rephrase-it.com/docs/settings - History: https://rephrase-it.com/docs/history - Pricing: https://rephrase-it.com/docs/pricing ## Use Case Pages ### ChatGPT Prompt Generator URL: https://rephrase-it.com/chatgpt-prompt-generator Generate optimized ChatGPT prompts instantly. Transforms rough ideas into structured prompts using official OpenAI best practices — role assignment, chain-of-thought, structured outputs. Works via global hotkey in any app. ### Image to Prompt URL: https://rephrase-it.com/image-to-prompt Attach up to 10 reference images, describe what to take from each, and get a detailed AI prompt. Visual references replace hundreds of words of description. ### Grok Prompt Generator URL: https://rephrase-it.com/grok-prompt-generator Generate optimized prompts for Grok by xAI. Structured prompts that leverage Grok's real-time web access, DeepSearch, and Think mode for better research, code, and text results. ### Gemini Prompt Generator URL: https://rephrase-it.com/gemini-prompt-generator Generate optimized prompts for Google Gemini. Based on official Google AI best practices — multimodal input, Search Grounding, and configurable thinking levels. ### Midjourney Prompt Generator URL: https://rephrase-it.com/midjourney-prompt-generator Generate detailed Midjourney prompts with style tags, lighting, composition, camera settings, and aspect ratio parameters. Turn simple ideas into stunning AI images. ## Audience Pages ### For Creators URL: https://rephrase-it.com/for/creators How Rephrase helps AI creators generate better prompts for images, videos, and music. ### For Researchers URL: https://rephrase-it.com/for/researchers How Rephrase helps researchers craft precise prompts for academic and investigative tasks. ### For Developers URL: https://rephrase-it.com/for/developers How Rephrase helps developers write better code prompts and technical documentation. ## Blog - Prompt Engineering Guides ### ChatGPT Prompting Guide URL: https://rephrase-it.com/blog/chatgpt-prompting-guide Practical tips for crafting effective ChatGPT prompts, based on GPT-5.2 documentation. Covers persona patterns, chain-of-thought, and structured outputs. ### Claude Prompting Guide URL: https://rephrase-it.com/blog/claude-prompting-guide Master Claude's literal instruction-following, Extended Thinking, and XML-based prompting style for better results. ### Gemini Prompting Guide URL: https://rephrase-it.com/blog/gemini-prompting-guide Understanding Gemini's thinking levels, multimodality, and Search Grounding for optimal prompt results. ### LLM Prompt Comparison URL: https://rephrase-it.com/blog/llm-prompt-comparison Why prompts don't transfer between AI models and how to adapt them for ChatGPT vs Claude vs Gemini. ### Text AI vs Image AI Prompts URL: https://rephrase-it.com/blog/llm-vs-image-video-prompts Fundamental differences between prompts for LLMs and generative AI for images/video. ## Other Pages - Gallery: https://rephrase-it.com/gallery - Research Examples: https://rephrase-it.com/examples/research ## Contact - Website: https://rephrase-it.com - Support: support@oshn-ai.com - Developer: Rephrase-it ## Keywords prompt engineering, AI prompt generator, prompt optimizer, ChatGPT prompts, Claude prompts, Midjourney prompts, Sora prompts, macOS productivity app, menu bar app, voice to text, Whisper transcription, AI assistant, prompt improvement