Calcish

The Ultimate Calculator + JavaScript + AI + Notebook for macOS

Calcish app screenshot on macOS

Key Features

Advanced Calculator

Instantly solve math problems, work with big numbers, fractions, vectors, matrices, and decimals. Supports complex expressions, scientific notation, and function.

Enhanced JavaScript Engine

Powered by QuickJS and extended with advanced math: big numbers, fractions, vectors, matrices, and a rich set of mathematical functions. Perform calculations impossible in a browser console or Node REPL.

Intuitive Notebook

Organize calculations, code, and AI chats in a beautiful, editable notebook. Add, edit, and re-run cells with a click, drag to reorder, and instantly see formatted results. Export to Markdown, JavaScript or PDF.

AI Integration

Chat with local or remote AI models, generate code, analyze data, and automate tasks—all in one place. Use AI cells to brainstorm, summarize, or get help with code and math, right inside your notebook.

Global Hotkey

Launch Calcish instantly from anywhere on your Mac, just like Spotlight. The floating scratchpad stays above other apps, so you can capture ideas or run quick calculations without breaking your flow.

Privacy First

Use powerful local AI models for private, offline conversations and computations. Your data stays on your device unless you choose to use remote models.

Enhanced JavaScript Engine

Calcish is built on QuickJS, a modern JavaScript engine, and supercharged for advanced math and scientific computing. Go beyond basic arithmetic with support for:

  • Big numbers: Work with arbitrary-precision integers and decimals.
  • Fractions, vectors, matrices: Native support for complex data types and operations.
  • Rich math: Do calculus, statistics, physics, and more with built-in functions.

Whether you’re a developer, student, or analyst, Calcish’s JavaScript engine gives you the power and flexibility to solve real-world problems with code.

Calcish code example
Calcish notebook interface screenshot

Intuitive Notebook Interface

Calcish’s notebook is designed for clarity and speed. Add, edit, and re-run cells with a click. Drag to reorder, instantly see formatted results, and organize your work in codebooks for future reference or sharing.

  • Editable cells: Mix code, text, files, and AI in one place.
  • Rich output: See results as tables, plots, or formatted text.
  • Easy export: Save locally or share your notebooks as Markdown, JavaScript or PDF.

Perfect for brainstorming, prototyping, or keeping a record of your work.

Supported AI Models

Remote (API key)

  • OpenAI: o1, o3-mini, GPT-4o, GPT-4 Turbo, GPT-4, GPT-3.5 Turbo
  • Google: Gemini 2.0 Flash, Gemini 1.5 Flash, Gemini Pro
  • Cohere: Command, Command Light
  • TextSynth GPT-J

Local (private, free)

  • Meta’s Llama 2 7B-Chat
  • OpenChat (Mistral)
  • Intel’s Neural Chat 7B (Mistral)
  • TinyLlama-1.1B Chat

+ More models added as released

Download on the App Store

Why Choose Calcish?

Boost Productivity: Replace your calculator, code scratchpad, and AI chat apps with a single, unified tool. No more switching between apps or losing track of your work.
No Setup Required: Start calculating, coding, or chatting with AI immediately—no configuration or accounts needed. Calcish works out of the box, so you can focus on your tasks.
Perfect for Everyone: Whether you're a developer, student, analyst, or just need quick answers, Calcish adapts to your workflow. Use it for math homework, code prototyping, data analysis, or AI-powered brainstorming.
Beautiful Results: See your results with rich formatting, tables, and charts for better understanding and presentation. Copy results or export your notebook for sharing.
Always at Your Fingertips: Use the global hotkey or menu bar icon to open the scratchpad, which floats above other apps. Save your work as a codebook or clear it for a fresh start.
Private by Design: Use local AI models for privacy, or connect to remote models with your own API key.

Ready to try Calcish?

Download now and experience the next generation of calculation, coding, and AI on your Mac.

Download on the App Store