Looper

Looper is an open-source notebook calculator for Mac. Write natural, readable calculations and use the magic word loop to model how values change over time.

Download Looper for Mac · Report an issue

Prerequisites: Node.js 20.9 or newer and pnpm 11.9.

Run the Electron app:

cd electron
pnpm install
pnpm dev

Run the website:

cd web
pnpm install
pnpm dev

Run pnpm test or pnpm build from either directory to test or build that project. On macOS, ./script/build_and_run.sh builds, packages, and opens the Electron app.

To contribute, submit a pull request.

Created by Ryan O'Rourke, a Los Angeles–based interface designer whose work spans Facebook, Apple, Instagram, and OpenAI.

Looper is available under the MIT License.