Vox

Overview

Vox integrates seamlessly with macOS to add AI-powered text tools to your workflow. Select text in any app—Safari, Notes, Mail, Messages, and more—then right-click to instantly rewrite it with AI.

Key Features

• Context Menu Integration – Select text, right-click, and rewrite with AI
• Global Hot Keys – Quick access to rewrite modes from any app
• Offline Speech-to-Text – Local Whisper transcription, no internet required
• Custom Presets – Create reusable rewrite instructions
• In-Place Replacement – Undo with Cmd+Z just like normal edits

Context Menu Options

Right-click selected text and choose from these modes under “Rewrite with Vox”:

• Rewrite with Vox – Quick improve pass for selected text
• Fix Grammar – Correct spelling, grammar, and punctuation
• Professional – Make text formal and business-appropriate
• Concise – Shorten text while preserving meaning
• Friendly – Make tone warm and casual
• Ask Vox… – Enter a custom rewrite instruction

Global Hot Keys

Configure global hot keys for instant access to rewrite modes from any app:

Mode	Default Shortcut
Fix Grammar	Cmd+Shift+G
Hot Key (mode picker)	Option+V

Speech-to-Text

Vox includes offline speech recognition using whisper.cpp—dictate text that gets transcribed locally and pasted at your cursor.

• Supports toggle mode (tap to start/stop) and hold mode (press and hold)
• Multiple model sizes from tiny (39MB) to medium (769MB)
• Supports 12+ languages including English, Spanish, French, Japanese, and Hindi
• VU meter shows real-time audio levels

Technical Architecture

Built with PyObjC for native macOS integration:

• macOS Services for system-wide context menu access
• whisper.cpp for local, offline speech recognition
• OpenAI API for AI text rewriting with configurable models
• Custom presets system for reusable rewrite instructions

Technologies Used

Python PyObjC whisper.cpp OpenAI macOS