step 1 of 2 · on your mac

install cantscroll for mac.

this is the free agent that watches for ai coding agents and signals your iphone to block distractions while you work. signed, notarized, and it never asks for your password.

↓ download for mac

universal (apple silicon + intel) · signed & notarized · macOS 12+

one-time setup

open the downloaded cantscroll-macos.pkg and follow the installer. no terminal, nothing to configure. the agent starts on its own and runs quietly in the background.
pair your iphone. run one command — it prints a qr code — then scan it in the app.

terminal

~ $cantscroll pair

scan this with the cantscroll app…

one-time and end-to-end encrypted — the keys never leave your devices.

that's it. the next time claude code (or cursor, codex, antigravity, devin) starts working, your phone locks the apps you chose — and unlocks the second the session ends.

prefer homebrew?

terminal

~ $brew tap cantscroll/cantscroll

~ $brew install cantscroll

~ $brew services start cantscroll/cantscroll/cantscroll

✓ agent running

note use one method, not both — the two share the same agent, so there's nothing to clean up either way.

heads up macOS may show "background item added" under an unfamiliar developer name — that's the cantscroll agent (a signing-certificate quirk). keep it on, or it can't detect your coding sessions.