ScreenSafe
On-device AI detects prying eyes over your shoulder
ScreenSafe fills a genuine niche with a simple, privacy-respecting approach. It's not a Swiss Army knife — but if you often pull up sensitive info on your phone in public, this no-nonsense app is hard to beat.
- Public transit commuters reading sensitive documents
- Remote workers in cafes or co-working spaces
- Journalists handling confidential sources
- Financial advisors reviewing client data in public
- Users who need cloud backup or cross-device sync
- People looking for a VPN or anti-malware tool
- Those who want to monitor non-phone screens
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In short
ScreenSafe — On-device AI detects prying eyes over your shoulder. Best for Public transit commuters reading sensitive documents, Remote workers in cafes or co-working spaces, Journalists handling confidential sources. Free to use.
Viability Score
How likely is ScreenSafe to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Real-time shoulder surfing detection via front camera
- On-device ML processing (zero cloud uploads)
- Offline operation without internet
- Instant alert notification when prying eyes detected
- No account or sign-up needed
- Privacy-first design with no data collection
- Works in low-light conditions
- Customizable alert sensitivity
- Battery-efficient background scanning
- No subscription or hidden fees
About ScreenSafe
ScreenSafe is a privacy-first mobile app that uses on-device machine learning to detect when someone is looking at your phone screen over your shoulder. Unlike cloud-based solutions, all processing happens locally on your device — no images or data ever leave your phone. The app triggers an alert whenever an unfamiliar face is detected in the background, giving you a subtle heads-up to lock or tilt your screen. It's designed for anyone who handles sensitive information in public spaces: journalists, remote workers, financial advisors, or simply people who value their digital privacy on public transit or in coffee shops. The detection model runs offline, requires no internet connection, and works with the front-facing camera to monitor for shoulder surfers in real time. Because it's purely on-device, there are no subscription fees, no data collection, and no third-party processing.
Behind the Verdict
ScreenSafe is a laser-focused tool for a specific problem: visual hacking of phone screens in public. Its on-device approach means zero privacy trade-offs, and the free price tag makes it an easy download. But it's not a comprehensive privacy suite — it won't block ads, encrypt data, or protect against malware. If your biggest concern is someone reading over your shoulder, this app does that one thing well. We'd like to see a bit more configuration (e.g., alert types, detection zone) and a clearer explanation of the underlying ML model. For the price, though, it's a solid add-on for privacy-conscious mobile users.
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Use Cases
- Detect shoulder surfers while reading emails on the subway
- Get alerted when someone peers at your phone in a coffee shop
- Work on sensitive documents in public without worry
- Safely check banking apps in crowded spaces
- Use as a privacy layer during remote work sessions outside
- Enable passive monitoring while texting or browsing
Limitations
- ScreenSafe only works with the front-facing camera and requires camera permission.
- It cannot detect people who are not in the camera's field of view.
- The detection is limited to face-looking-at-phone scenarios and may not work reliably in extremely dark environments or with partial obstructions.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
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