Best Privacy Screen App for Mac in 2026: 7 Options Compared
If you only need to hide everything when you walk away, the macOS lock screen is free and already there: press Control-Command-Q. If you want a free app that blurs the screen when you look away and you’re comfortable granting Screen Recording and camera access, QuietGlass is open source and does a lot. If you want a lock and a blur you can trigger in a keystroke, with your windows left exactly where they were and no permissions at all, Shoji is $14 once. If the risk is the stranger in the next seat for a five-hour flight, a physical privacy filter is still the strongest answer.
Every fact about the other apps below comes from their own websites or App Store listings, checked in October 2026. Prices change, so look again before you buy. Shoji is ours; it’s in the list where it fits, with its limits spelled out.
What to look for in a privacy screen app
The phrase covers several different jobs, so start with who you’re hiding the screen from.
Walking away versus working in public. Locking the Mac when you get up is one job. Keeping the person beside you or behind you from reading while you work is another. Some apps only do one.
Triggered or automatic. Some apps act when you press a shortcut or move to a hot corner. Others watch through the camera, or read head movement from AirPods, and blur when you look away or a second face appears. Automatic is convenient; it also means the camera is on.
Permissions. Blurring the screen doesn’t have to mean capturing it, but some apps do capture it and ask for Screen Recording. Others need Accessibility or the camera. Each permission is something you’re trusting the app with.
A real lock or a curtain. A blur that anyone can dismiss stops a glance. A lock that needs Touch ID or your password stops someone sitting down at your Mac. Know which one you’re buying.
Signed and notarized. An app notarized by Apple opens without warnings. An unnotarized one makes you click through Gatekeeper’s “Open Anyway”, which is fine if you trust the source and worth knowing before you start.
The 7 options
1. The macOS lock screen (built in, free)
Press Control-Command-Q, or choose Lock Screen from the Apple menu, and the screen locks. In System Settings, Lock Screen, turn on “Require password after screen saver begins or display is turned off” and pick how soon. In Desktop & Dock, Hot Corners lets you set a corner of the screen to Lock Screen, so moving the pointer there locks the Mac without touching the keyboard.
Good at: a real lock, for free, that every Mac already has. When you’re leaving for longer than a few minutes, this is the one you want.
Falls short: it’s all or nothing. Everything is hidden, including the window you wanted to keep in view, and there’s no quick blur for the moment someone walks up behind you. Coming back means the full login screen every time. How to lock a Mac screen instantly covers every built-in way to do it.
Price: free with macOS.
2. QuietGlass (free, open source)
QuietGlass is a menu bar app published on GitHub under the MIT license. It blurs the screen when you look away, using the camera or compatible AirPods for head tracking, and it can warn you or blur when other faces show up on camera. It also has an instant full-screen blur on Control-Option-Command-P, protection for a single window or area, a Focus mode that keeps the active window clear and blurs around it, per-app rules, and detection of sensitive text using on-device text recognition. The manual blur and Focus mode work without AirPods or a camera.
Good at: the widest feature list here, for nothing, with the source code open to read.
Falls short: it needs Screen Recording, which its README says is required for the blur and the text analysis, plus the camera for head tracking and face detection. The current download is not notarized by Apple, so the first launch goes through “Open Anyway”.
Price: free. It needs macOS 14 or later, on Apple silicon or Intel.
3. Shoji ($14 once)
Shoji slides a screen over everything on every display when you press Command-L, and Touch ID or your Mac password (checked by macOS) opens it again, with every window exactly where you left it. The displays don’t sleep, music keeps playing and downloads keep going. While it’s shut, the keyboard belongs to the lock, so nothing typed reaches your apps. After an away time you choose, it also turns on the real macOS lock.
There are five ways to draw the screen: lock everything; a quick blur of everything with no password, which esc dismisses; Focus Blur, where only the window you’re using stays sharp and the rest softens as you switch; Private Apps, which keeps Messages, Slack and Mail blurred unless you’re the one using them; and App Lock, which locks just the app in front when you hand the Mac over for a demo. A hot corner can lock or blur, away timers can blur after a minute and lock after five, and you can leave a note on the lock such as “Back at 3:30”.
The blur is drawn by macOS itself. Shoji never captures the screen or reads your windows, so it asks for no permissions: not Screen Recording, not Accessibility, not Full Disk Access. If anything closes Shoji while it’s locked, even Force Quit, a guard turns on the macOS lock before the desktop can show. Each wrong password waits a little longer, and you see every failed try when you come back. It goes online only to activate the license and check for updates, and there’s no account and no analytics.
Good at: locking and blurring dozens of times a day without losing your place, with no permissions to grant.
Falls short: there’s no camera-based look-away detection; it acts when you press a shortcut, use a hot corner or hit an away timer. A blur doesn’t change the viewing angle, so the window you’re working in is as readable from the next seat as it is from yours. It doesn’t protect against cameras, screen recording by other apps or network snooping. It needs macOS 14 Sonoma or later, and the trial is a day.
Pick something else if you want the screen to blur by itself when you look away (QuietGlass or Gaze Guard), you’re on macOS 12 or 13 (Hide My Screen runs on 12 and later), or you need nothing beyond the occasional lock (the built-in one is free).
Price: $14 once, for up to three Macs, with every update included. Free for 24 hours with every feature, no card, and 30 days to ask for a refund.
4. Hide My Screen (free download, or $19.99 once for Full)
Hide My Screen darkens the whole screen except a spotlight that follows your pointer, so only the part you’re looking at is visible. The opacity is adjustable. The Full version, sold on the developer’s site, also follows your typing, supports more apps and adds a frosted glass overlay. It asks for Accessibility so the spotlight can find your text cursor; the site says it reads only the cursor’s position, never what you type.
Good at: working in public, where you want the person beside you to see almost nothing while you read and type.
Falls short: the free App Store version can’t follow your typing, because Apple doesn’t allow the access that needs. It’s an overlay you work under, and its site doesn’t describe a password lock, so it isn’t a replacement for locking when you walk away.
Price: the Mac App Store version is free to download, with a $5.99 in-app purchase. Full is $19.99 once from the developer, with a 30-day refund. It needs macOS 12 Monterey or later.
5. Gaze Guard (free for 3 days, then $4.99)
Gaze Guard uses the camera and Apple’s on-device Vision framework to blur your screen the moment you look away, or when someone else is looking at it. Its App Store listing says no images are ever stored or transmitted, and that the camera is used only while protection is on.
Good at: an automatic blur for a low one-time price, from the Mac App Store.
Falls short: it depends on the camera, so it needs camera access and works only while the camera can see you. The listing describes a blur, not a password lock.
Price: free to download with everything unlocked for 3 days, then a one-time Gaze Guard Lifetime purchase of $4.99. It needs macOS 14 or later.
6. HazeOver ($4.99)
HazeOver dims every background window so the active one stands out. You can change the dimming intensity, toggle it with a keyboard shortcut, and automate it with Shortcuts, Focus filters and AppleScript.
Good at: keeping your attention on one window.
Falls short: it’s sold as a distraction dimmer, not a privacy tool. Dimmed windows are darker, not hidden, and there’s no lock.
Price: $4.99 from its website, also on the Mac App Store and Setapp, with a free trial download. It needs macOS 13 Ventura or later.
7. A physical privacy filter (not an app)
A privacy filter is a sheet of film that darkens the screen when it’s viewed from the side. It’s always on, needs no software, and works on the very window you’re typing in, which no app can do.
Good at: a long stretch next to a stranger: a plane seat, a train table, a shared bench.
Falls short: it does little against someone standing behind you, because they see the screen from nearly your angle. The screen looks dimmer even from the front, and you have to take it off to show someone your screen. There’s more on this in physical filter or software.
Price: varies by maker and screen size.
Comparison at a glance
| What it does | Triggered by | Permissions it asks for | Price | macOS | |
|---|---|---|---|---|---|
| macOS lock screen | Locks to the login window | Shortcut, menu, hot corner | None | Free | Any |
| QuietGlass | Look-away blur, full-screen blur, Focus mode, nearby-face warning | Camera or AirPods, or a shortcut | Screen Recording; camera or Motion & Fitness for tracking | Free | 14 or later |
| Shoji | Lock, blur, Focus Blur, Private Apps, App Lock | Shortcut, hot corner, away timer | None | $14 once | 14 or later |
| Hide My Screen | Dark overlay with a spotlight on the pointer | Running it | Accessibility (Full version) | Free download; Full $19.99 once | 12 or later |
| Gaze Guard | Blur when you look away or someone else looks | Camera | Camera | $4.99 after 3 days | 14 or later |
| HazeOver | Dims background windows | Always on, or a shortcut | Not stated on its site | $4.99 | 13 or later |
| Privacy filter | Darkens the screen from the side | Always on | None | Varies | Any |
Which one to pick
- You lock up when you leave and that’s all: the macOS lock screen, with a hot corner.
- You want the screen to blur by itself when you look away, and free matters: QuietGlass, if you’re fine with Screen Recording and an unnotarized download.
- Same, from the Mac App Store, with nothing to configure: Gaze Guard.
- You step away and get interrupted all day, and want your windows untouched when you come back: Shoji.
- You work on trains and in cafes and want only your cursor’s patch visible: Hide My Screen.
- You mostly want to focus on one window: HazeOver.
- You sit next to strangers for hours: a physical filter, plus one of the apps for when you get up.
Questions
Does the Mac have a built-in privacy screen?
Not a blur or a privacy mode. It has the lock screen (Control-Command-Q), a Lock Screen hot corner, and a setting to require your password soon after the screen saver starts or the display turns off. For anything between “everything visible” and “fully locked”, you need an app.
Do privacy screen apps record my screen?
Some need to. QuietGlass asks for Screen Recording, which its README says the blur and text analysis require. Shoji doesn’t: its blur is drawn by macOS, it never captures the screen, and it asks for no permissions. Check what any app asks for on first launch.
Can a privacy app stop the person sitting next to me?
Only partly. An app can hide or blur what you’re not using, but the window you’re working in has to stay readable to you, and it’s just as readable from the next seat. A physical filter is the thing that narrows the viewing angle. Many people use both.
What happens if someone force quits a privacy screen app while it’s locked?
It depends on the app. Shoji runs a guard beside it that turns on the macOS lock if anything closes Shoji while it’s locked, so the desktop never shows. What happens if someone force quits a Mac screen locker explains what to test in any app you try.