Catches posture drift as it happens
Reads slouching, head tilt, and forward-head in real time, and nudges you to reset before it sets in.
Real-time feedback for posture, distance, and desk habits, all on your computer.
With just your webcam, you notice what you'd otherwise miss, and know how to adjust, without having to keep an eye on yourself.
Free during early access · macOS 12+ and Windows 10+ · One-minute setup
Knowing how to sit well is easy. Noticing when you stop is not.
whether you’re
browsing the web gaming answering emails taking notes watching a series writing messages checking the news shopping online organising files video calling family sorting through photos planning a trip reading an article comparing products writing a paper working making slides researching something editing photos following a tutorial filling out forms doing homework finishing an assignment learning a language catching up job hunting revising a draft planning your week coding editing a video studying for an exam fixing a bug making music watching a lecture sketching reading documentation working late editing a track
Checks
Catches drift the moment it starts.
Posture, screen distance, and habits like face touching and nail biting, noticed while a small correction is still easy, not after your back or eyes complain.
Trends
See the pattern, not just the moment.
Daily and weekly trends across everything it checks, so you can tell a rough afternoon from a habit worth changing.
Continuous checks
- Posture
- Screen distance
- Screen time
- Eye breaks
- Face touches
- Nail biting
Goals
Set a target, build the streak.
Quiet daily goals for posture and distance, with streaks that reward staying consistent instead of being perfect.
Yours
The frames are gone. The numbers are yours.
Frames are read in memory and never written to disk. What survives is arithmetic, and it stays on your computer until you erase it.
- Frames arrive from the camera about 24 times a second.
- Each one comes apart in memory and is never written to disk.
- Almost all of it falls away.
- What remains is four numbers: 62 cm, 18°, 24°, 41 min.
- They are added to three rows an hour, kept on your computer.
- Nothing is sent anywhere.
In the background
Works in the background, with four ways to stay aware.
Close the window and keep working.
- A tap on the shoulder when something drifts.Notification
- The full picture, one glance from the menu bar.Quick look
- A mirror in the corner. Glance over, see how you are sitting.Mini-view
- Your numbers, at the edge of your eye.Status pill
Your history keeps building the whole time.
ScreenGuardian now
Lean back a bit
Lean back to increase your distance from the screen.
Plus eye-break reminders, gentle habit cues, adaptive reminder styles and quiet hours that fit your day, and full on-device privacy controls.
How it's different
A reminder app nags on a timer. ScreenGuardian adapts to you.
Even alerts that only fire on a real problem turn into nagging if they keep repeating. So ScreenGuardian lets you set how often it speaks up, gives a held slip breathing room between nudges, and goes quiet for focus or sleep, instead of becoming noise you mute.
Reminder apps ScreenGuardian
When it speaks up On a schedule, even when you are sitting fine Only when your posture or distance actually drifts, and holds long enough to be sure
If a problem keeps up Same alert, same interval, on repeat Reminder styles (Subtle, Balanced, Coaching) set the breathing room between nudges
When you need quiet Mute it and lose the help Quiet hours for meetings or deep work, and snooze anytime, while the checks keep running
Where it lives A window or break screen you stop to deal with Runs in the background while you work in any app, with an optional floating mini-view
What it covers Usually just breaks, or just posture Posture, screen distance, eye breaks, and habit cues together
How it knows A fixed timer, blind to you Notices your real posture and distance, calibrated to your desk
What it sees A face it could recognize Posture landmarks only, it never identifies you
Your camera and data Often runs through the cloud Camera frames, posture readings, and desk-habit history never leave your device
Winner 2023 Congressional App Challenge Winner 2024 Copernicus Entrepreneurship Olympiad
In everyday use
Helpful when it matters. Quiet when it does not.
Calibrate your setup
Set your usual desk position once so posture and distance feedback starts from your real workspace.
Work with lightweight feedback
Feedback responds to sustained patterns, with timing you control, so one imperfect frame never becomes a distraction.
Review patterns locally
Use goals, trends, and pinned charts to understand your habits without sending your desk history to a cloud dashboard.
Stays out of the way
Feedback you can tune
- Habit feedback is optional.
- Alert timing is adjustable.
- Notification mode pauses local stats and history.
- The app keeps working in the background when you want it out of the way.
What leaves your device?
Camera data does not.
Webcam frames Never stored or sent
Microphone audio Never requested
Posture and distance history Stays on your device
Sold or shared with advertisers Never
Support reports Only if you send one
Crash reports Only if you turn them on
Account email, when signed in Yes
FAQ
Common questions
Who is ScreenGuardian for?
Anyone who spends long hours at a computer. Leaning in, slouching, and forgetting to look away come from time in the chair, not from what you do for a living, so it works the same whether you are studying, gaming, coding, or on calls all day. All it needs is the webcam you already have.
Does ScreenGuardian record or store my webcam?
No. Camera frames are processed in memory on your computer to read posture and distance in real time, then discarded. Nothing is written to disk and nothing is uploaded.
Does any of my data leave my computer?
Your posture, distance, break, and habit history stay on your machine. Network use is limited to account/access checks, updates, downloads, and support or crash reports you choose to send.
Where is my data stored, and is it secure?
Your stats, history, and settings are kept in local files in ScreenGuardian's own folder on your computer, never uploaded. Because the data stays on your machine, it is protected by your operating-system account and disk encryption (FileVault on macOS, BitLocker on Windows), the same as any other file you own.
Does it use my microphone?
No. ScreenGuardian never requests or uses your microphone.
Does it work offline?
Yes. All processing runs on your device and works with no internet connection. The access check and any app updates simply refresh the next time you are online.
Does the full window need to stay open?
No. ScreenGuardian keeps running quietly in the background. Picture-in-Picture gives you a small floating live view, and Notification mode keeps live alerts running while local stats and history are paused.
What happens when my computer sleeps or I close my laptop?
Nothing to manage. ScreenGuardian sleeps with your computer and picks back up on its own when you return, so you do not need to quit it when you step away. If you want it off while you stay at your desk, use Pause anytime, or let it keep running quietly in the background.
Is this surveillance software?
No. ScreenGuardian reads posture, distance, and break cues from your webcam locally and shows that feedback to you. It does not record your screen, log keystrokes, or send behavior history to a server.
Does it recognize my face or build a faceprint?
No. ScreenGuardian reads posture landmarks (the positions of features like your eyes, nose, and shoulders) to estimate how you are sitting. It does not run facial recognition, does not build a face template or faceprint, and cannot identify you. Those landmarks are numbers processed in memory on your device for a single frame, then discarded.
Is it free?
ScreenGuardian is free while early access is active on your account. Paid plans launch later, with advance notice and early-bird pricing before any billing begins.
Which operating systems are supported?
macOS and Windows.
Early access
Download ScreenGuardian
Sign in to unlock the Mac or Windows download for your account.
Need access? Start from Account.