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 machine.
Quiet nudges that stay in the background while you work — with a Picture-in-Picture view when you want a live look.
Free during early access · macOS and Windows
Winner 2023 Congressional App Challenge Winner 2024 Copernicus Entrepreneurship Olympiad
Recognition
Winner of the Congressional App Challenge
Won the 2023 Congressional App Challenge and the 2024 Copernicus Entrepreneurship Olympiad.Where it runs
On-device
Real-time posture and distance feedback runs on your computer.Platforms
macOS and Windows
Downloads unlock with a free early-access account.What it notices
Small corrections before they become habits.
ScreenGuardian pays attention to four simple things: how you sit, how close you are, whether your eyes have had a reset, and the unconscious desk loops that creep in during focus work.
Posture drift
Slouching, head tilt, forward drift — you see it the moment it starts, while sitting back up is still easy.
Screen distance
A live readout of how far you sit from the screen. When you start leaning in, you see it before your eyes feel it.
Break rhythm
20-20-20 reminders turn eye resets into a lightweight rhythm instead of another notification to ignore.
Desk habits
Optional cues for face touching and nail biting — the small loops you stop noticing an hour into focus.
How it feels
Helpful when it matters. Quiet when it does not.
ScreenGuardian should feel like a private desktop instrument, not a nagging camera app. The product is built around simple setup, adjustable feedback, and local review.
Calibrate your setup
Set your usual desk position once so posture and distance feedback starts from your real workspace.
Work with lightweight feedback
Feedback keys off 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 delay can be tuned to reduce noise.
- 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
Microphone audio Never requested
Posture and distance history No
Support reports Only if you send one
Crash reports Only if you turn them on
Account email, when signed in Yes
Privacy
Your habits stay yours.
Safeguarding your posture should never come at the cost of safeguarding your privacy.
1
Runs on your machine
ScreenGuardian estimates posture and screen distance locally. Camera frames do not leave your device.
2
No stored camera frames
Camera frames pass through the app in memory for real-time feedback. ScreenGuardian does not store them.
3
No microphone access
ScreenGuardian does not need your microphone and does not listen to your room, calls, or conversations.
4
No ad-tech bargain
No behavioral profiling, no attention economy, no hidden feed of personal habits. The product is the app.
FAQ
Common questions
The things a privacy-conscious person asks before installing a webcam app — answered plainly.
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 simply refreshes the next time you are online.
Does the full window need to stay open?
No. ScreenGuardian can keep running 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.
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.
Is it free?
ScreenGuardian is free while early access is active on your account. Paid plans launch later; continued use will require an active plan or explicit access grant, with advance notice before 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.