Open source · macOS

Block distractions.
Ship code.

A lightweight CLI that blocks distracting websites and apps on macOS. One command to focus. Zero performance impact.

$curl -fsSL https://lockin.sh/install | sh

Everything you need to focus

No bloated app. No subscription. Just a CLI that does its job.

Block Websites

Modifies /etc/hosts at the kernel level to block distracting sites. Zero network overhead — no proxies, no packet inspection.

Block Apps

Monitors running applications and gracefully quits distracting ones. Messages, Discord, Telegram — gone.

Fully Customizable

Edit ~/.lockin/config.yaml to add or remove sites and apps. Ship with sane defaults, tweak to your workflow.

Single Binary

Written in Go. No runtime dependencies, no bloated apps hogging resources. Install in seconds, runs instantly.

Three commands. That's it.

1

Install

$ curl -fsSL https://lockin.sh/install | sh
2

Lock in

$ lockin
3

Ship code

$ # distractions blocked. focus mode on.