Overview

RewriteBar is a lightweight, menu bar AI writing assistant designed specifically for macOS that brings AI-powered text enhancement to every application on your Mac. Originally created by a non-native English speaker to improve everyday writing, RewriteBar has evolved into a comprehensive writing toolkit supporting 500+ languages, 14+ AI providers with 500+ models, and powerful features like grammar correction, tone adjustment, translation, and custom workflows—all accessible via keyboard shortcuts from any app.

Pricing: Free (100 requests) | Monthly: $5/mo | Annual: $40/yr | One-time: $29 (BYOK)

Minimum macOS: 13.0 (Ventura)

Architecture: Apple Silicon, Intel

AI Features

Key Features

• System-wide AI writing assistance across all macOS applications
• Support for 14+ AI providers (OpenAI, Anthropic, Google, DeepSeek, Mistral, Groq, Azure AI, and more)
• Access to 500+ AI models with flexible provider selection
• Grammar and spelling correction with context-aware AI insights
• Translation across 500+ languages
• Tone adjustment (professional, casual, punchy, friendly, etc.)
• Text simplification and expansion capabilities
• Custom actions and workflows for personalized tasks
• PopClip integration for quick text editing
• Keyboard shortcut customization for instant access
• Side-by-side comparison of original vs. modified text
• Workflow chaining to combine multiple actions sequentially
• Local AI model support via Ollama, LM Studio, Apple Intelligence, and Osaurus
• Pre-built templates: extract action items, create emails, generate summaries, format transcripts, convert case styles
• Humanize AI-generated content to make it more natural
• BYOK (Bring Your Own Key) for unlimited usage with personal API keys
• Lightweight footprint at just 25 MB
• Privacy-focused: direct communication with AI providers, no server storage
• Compatible with Chrome, Figma, Notion, Word, Slack, VS Code, Discord, Teams, WhatsApp, and all text-based apps
• Menu bar integration for seamless macOS workflow
• One-time purchase option to avoid subscription fatigue

Links

• Official Website