Transform Your Writing Across Every macOS Application

RewriteBar is a powerful AI writing assistant designed exclusively for macOS that lives in your menu bar and enhances your writing wherever you type. With a simple keyboard shortcut, you can access AI-powered text improvements, translations, and custom workflows without leaving your current application.

Solve Common Writing Challenges Instantly

Whether you're composing emails, writing code comments, crafting social media posts, or documenting projects, RewriteBar eliminates the friction of switching between apps for text editing tasks. It fixes grammar and spelling errors with context awareness, translates content across 500+ languages (including creative options like Yoda-style English), and lets you compare changes side-by-side before applying them.

Key Features & Capabilities

• Grammar & Spelling Correction: Context-aware fixes that catch errors other tools miss
• Multi-Language Translation: Support for 500+ languages with dialect options (UK/US English, formal/informal forms)
• Custom AI Actions: Create personalized workflows from presets or build your own
• Multi-Step Workflows: Chain multiple actions together (expand text, add emojis, translate, rewrite)
• PopClip Integration: Trigger RewriteBar directly from the PopClip menu
• Local AI Model Support: Works offline with Ollama, LM Studio, Apple Intelligence, and Osaurus for maximum privacy
• Keyboard-First Design: Full keyboard shortcut support for efficient, mouse-free operation
• Side-by-Side Comparison: Review changes line-by-line or word-by-word before accepting

Real-World Use Cases

Developers use RewriteBar to fix JSON errors, generate lorem ipsum text, convert between JSON and YAML, and transform requirements into agile user stories. Content creators leverage it to humanize AI-generated text, create TL;DR summaries, generate ASCII art, and apply proper title case formatting. Business professionals rely on it to extract action items from meeting notes, transform bullet points into professional emails, analyze pros and cons, and convert formal communications to informal tone.

Privacy-Focused & Flexible

With support for local AI models, RewriteBar keeps your sensitive text on-device while maintaining fast performance. The tool includes advanced features like prompt injection guards to harden AI prompts against security risks, making it suitable for professional and enterprise environments.

Seamless Integration

RewriteBar works system-wide across all macOS applications through keyboard shortcuts and clipboard integration. The PopClip extension provides an additional triggering method for users who prefer mouse-based workflows. Available as a free trial with a one-time license purchase model.