The AI tutor that
lives on your screen
Halo sees what you’re working on, works problems out visually, and explains them step by step — right where you need it.
Universal build · runs on Apple Silicon & Intel
›Opening on Mac for the first time?
HALO isn’t notarized by Apple yet, so on first launch macOS shows “Apple could not verify…”. It’s safe to open — two ways to get past it:
Point & click
Open System Settings → Privacy & Security, scroll to Security, and click Open Anyway next to HALO.
Or, in Terminal
xattr -dr com.apple.quarantine /Applications/HALO.appFree to try · No account needed · macOS 12+ and Windows 10+
Sees your screen
Halo reads what you're working on — a problem set, a diagram, a slide — and follows along in real time.
Works it out visually
Instead of a wall of text, it sketches steps and annotations directly over your work so the logic is clear.
Explains, not just answers
Ask a follow-up and Halo breaks the reasoning down until it actually clicks. No sign-up required.