Getting started

Requirements, installation, the one-time Gatekeeper step, and your first sheet.

Numlex is a native macOS notepad calculator: type plain lines and get live, checked results in the column beside them. This page gets you from download to your first calculation.

Requirements

macOS 26 or later, Apple Silicon (arm64). There is no Intel build.
Free and open source under the MIT license.

Install

Download the DMG from the latest release, open it, and drag Numlex.app to Applications.

Note: Numlex is signed ad-hoc and is not notarized. If macOS blocks the first launch, Control-click (right-click) Numlex.app → Open → confirm. Whether this works depends on your macOS version and system state. Do not disable Gatekeeper system-wide.

You can also install via Homebrew from the custom tap Qulierm/homebrew-tap:

brew install --cask Qulierm/tap/numlex

Note: the Homebrew cask can lag the latest GitHub release — the release page above is always the authoritative source.

First launch

Create a sheet and type a line — results appear live in the right column:

30 + 567 × 2
15% of 4572

That’s it. No accounts, no setup, no configuration required. Your sheets are stored locally on this Mac.

Where to go next

Quick tour — the main ideas in five minutes.
Natural calculations — everything you can type.
Privacy & network — exactly what (little) Numlex sends online.