Calibrate your usable zones once. ScreenBoundary creates independent virtual displays for each — complete with their own menu bar, Spaces, and fullscreen support.
Open ScreenBoundary and drag rectangles over the parts of your display that still look right. Takes about 30 seconds.
Hit Enable ScreenBoundary. Your virtual displays show up in System Settings → Displays instantly — no restart, no extra hardware.
Drag windows between zones, go fullscreen, switch Spaces. Each zone is a real macOS display — your apps never know the difference.
Mirroring tools and adapters weren't made for a dead region. ScreenBoundary was.
| ScreenBoundary | BetterDisplay / DisplayBuddy |
DisplayLink | |
|---|---|---|---|
| Visual zone calibration (~30 sec) | manual setup | ||
| Auto-revert failsafe built in | |||
| Multiple zones from one panel | |||
| Real displays — own menu bar, Spaces, fullscreen | Pro, stream | ||
| One-time · from $12.99 | Pro, $19.99 | subscription |
Not on the Mac App Store — ScreenBoundary uses a private macOS API, so it ships as a notarized app signed with a registered Apple Developer ID.
Screen repairs don't get cheaper. ScreenBoundary gets you working again today — and if it's not right for your setup, full refund within 30 days.
Get ScreenBoundary — From $12.99As long as part of your screen still displays correctly, you can define a zone around it. The crack itself doesn't matter — ScreenBoundary only cares about which rectangles still look good.
Yes — macOS 13 (Ventura) and later, on both architectures. On Apple Silicon the per-zone screen capture is hardware-accelerated and runs at up to 60fps with negligible overhead.
No. ScreenBoundary uses a private macOS API to create virtual displays, which App Store rules don't allow. It's distributed as a notarized app signed with a registered Apple Developer ID, so macOS trusts it on first launch.
The virtual displays disappear and your calibration is removed from UserDefaults. Your physical monitor is completely unaffected — nothing is changed at the hardware or system level.
Absolutely. Draw two (or more) zones across a healthy ultrawide and macOS treats each as a true independent display — separate Spaces, menu bars and fullscreen, which mirroring tools don't give you.
Screen capture runs at up to 60fps per zone. On Apple Silicon this is hardware-accelerated and negligible; on Intel it's light enough for everyday use while you wait on a repair.
Email us within 30 days and you'll get a full refund — no questions asked, no forms to fill. If ScreenBoundary isn't the right fit for your Mac, you pay nothing.
Personal covers 1 Mac, Home covers up to 3. If you move to a new Mac, use Deactivate this Mac in Settings — it frees the seat instantly so you can activate on the new machine. No support email, no forms.
Yes. The app activates online once, then works offline for up to 14 days between silent license revalidations. The check happens in the background — you won't notice it.
Yes. Because ScreenBoundary creates real macOS displays, Zoom and Meet let you pick a specific display to share. Pick the zone you want; the rest of your screen stays private.
Every activation shows an auto-revert countdown — the same pattern macOS uses when you change resolution. If anything looks wrong, do nothing and it reverts in 15 seconds. Click Revert to undo immediately. You cannot get your Mac stuck.
BetterDisplay Pro can stream a virtual screen over the damaged area, but it's manual: calculate a custom resolution for your intact region, then position and zoom the stream until the dead area is out of frame. Their docs warn you can lose control of your Mac and recommend setting emergency keyboard shortcuts first. ScreenBoundary is purpose-built: drag rectangles over the glass that works, click Enable. The built-in failsafe means it's always reversible.
Price goes back up after launch — no subscription, ever.
Instant delivery by email: download + license key.
Doesn't work on your setup? Email us and you'll get a full refund.