Calcish
Calcish is an all-in-one tool for macOS users that combines the functionality of a calculator with JavaScript scripting, inbuilt AI feature...
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What is Calcish?
Calcish is a macOS app that serves as a programmable calculator, JavaScript notebook, and AI assistant in one intuitive interface. It allows users to perform instant calculations with big numbers, fractions, vectors, matrices, and decimals using an enhanced QuickJS engine that extends standard JavaScript for advanced math operations impossible in browser consoles or Node REPL. The notebook-style layout lets you organize code, text, AI chats, and rich outputs like tables and plots in editable cells, with easy export to Markdown, JavaScript, or PDF.
Key features include a global hotkey for quick access to a floating scratchpad, support for calling APIs with secure key storage, and seamless integration with numerous AI models. Remote models like OpenAI GPT-5 series, Google Gemini 3 Pro, and Anthropic Claude via OpenRouter require API keys, while local models such as Meta Llama 2 7B-Chat, OpenChat on Mistral, and TinyLlama run offline on your Mac for privacy. Users can chat with AI directly in cells, generate code, analyze data, or embed AI calls in JavaScript functions.
Designed for programmers, data scientists, students, analysts, and anyone needing quick computations or prototyping, Calcish boosts productivity by replacing multiple tools like calculators, code editors, and AI chats. It's ideal for exploratory programming, math homework, algorithm testing, data manipulation, and brainstorming without app-switching. The privacy-first approach ensures no data collection, with everything staying on-device unless using remote APIs.
No setup is required—download from the Mac App Store and start immediately. Save work as codebooks for reuse, access via menu bar icon, and benefit from comprehensive documentation covering all functions, classes, and Calcish-specific extensions.
Calcish pricing
Pricing model: Free
Calcish pros
- Enhanced QuickJS with big numbers support
- Native fractions arithmetic like 1/2 + 1/3 = 5/6
- Vector and matrix operators for arrays
- Decimal type for exact currency calculations
- Intuitive notebook with editable cells
- Rich formatted outputs including tables and plots
- Global hotkey for instant scratchpad access
- Floating window above other apps
- Export to Markdown, JavaScript, or PDF
- Secure API key storage for calls
- Local AI models with one-click download
- Remote AI including GPT-5.2 and Gemini 3 Pro
- AI callable from JavaScript code
- No data collection for full privacy
- Built-in documentation and search
- Menu bar icon for quick launch
- Codebook saving for persistent work
Calcish cons
- macOS only, no Windows or Linux support
- Requires macOS 13.0 or later
- Pro subscription needed for full features
- Remote AI requires user API keys
- Local AI demands sufficient Mac RAM
- 16+ age rating due to web access
- No iOS or iPad version
- In-app purchases via App Store only
- Limited to JavaScript-based scripting