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BHelper

A macOS menu bar app that lets you rewrite selected text using AI models from Ollama, OpenAI, Google Gemini, and Anthropic Claude.

macOS App //
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BHelper

Enhance your writing with AI, right from your Mac's menu bar.

BHelper is a macOS menu bar app that lets you effortlessly rewrite selected text using state-of-the-art AI models from leading providers.

Note: This app is currently unsigned due to the $99 Apple Developer Program fee requirement.

Features

  • Effortless Rewriting - Select text in any app, use a keyboard shortcut, and BHelper rewrites it using your chosen AI model
  • Multiple AI Providers - Choose from Ollama (free, local), OpenAI, Google Gemini, or Anthropic Claude
  • Model Selection - Pick your preferred model from each provider
  • Customizable Pre-prompts - Guide the AI's rewriting style with custom prompts
  • Global Hotkeys - Trigger transformations with convenient keyboard shortcuts
  • Universal Compatibility - Works with any application where you can select text

Supported AI Providers

Provider Models Cost
Ollama llama3, mistral Free (local)
OpenAI gpt-4, gpt-4-turbo Paid
Google gemini-1.5-pro Free
Anthropic claude-2, claude-instant-1, sonnet-3.5, opus Free $5 credit

Installation

Download

  1. Download the latest release from the Releases page
  2. Look for the .zip file

Install

  1. Double-click the downloaded BHelper.zip to extract
  2. Drag BHelper.app to your Applications folder

First Run

Since BHelper isn't from the App Store, macOS will show a warning:

  1. Right-click (or Control-click) on BHelper.app
  2. Select "Open" from the menu
  3. Click "Open" in the warning dialog
  4. BHelper will launch and appear in your menu bar

Grant Permissions

BHelper needs Accessibility permissions to read and modify selected text:

  1. Open System Preferences > Privacy & Security > Privacy
  2. Select Accessibility in the sidebar
  3. Click the lock icon and authenticate
  4. Find and enable BHelper

API Key Setup

OpenAI

Get your API key from: https://beta.openai.com/account/api-keys

Anthropic

Sign up at https://console.anthropic.com/ to get $5 in free credits

Free Options

  • Ollama - Run powerful models locally on your Mac at no cost
  • Google Gemini - Currently available for free

Keyboard Shortcuts

Action Shortcut
Transform with Pre-prompt Cmd + Ctrl + Option + U
Use Selection as Prompt Cmd + Ctrl + Option + I

Tech Stack

  • Language: Swift
  • Platform: macOS
  • Architecture: Menu bar application
  • AI SDKs: SwiftAnthropic, OpenAISwift, GoogleGenerativeAI

Contributing

Contributions are welcome! Feel free to open issues or submit pull requests.

License

This project is open source. See the repository for license details.

Acknowledgements

Built with these excellent libraries:

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