ScreenTest - Dead Pixel Check

Screen Test is a lightweight, privacy-focused app that helps you check your iPhone and iPad display quality with 10 professional screen tests.

Screen Test is a lightweight, privacy-focused app that helps you check your iPhone and iPad display quality with 10 professional screen tests.

TESTS INCLUDED:

• Dead Pixel Test - Detect dead or stuck pixels with solid color backgrounds
• Touch Screen Test - Find dead zones that don't register touch input
• Multi Touch Test - Check how many simultaneous touch points your screen supports
• Color Accuracy Test - Verify color reproduction with RGB gradients, grayscale, and SMPTE color bars
• Screen Uniformity Test - Detect backlight bleeding and uneven brightness
• Contrast Test - Check contrast ratio with checkerboard and stripe patterns
• Grid / Line Test - Detect screen distortion with grid, crosshair, and circle patterns
• Response Time Test - Check for ghosting and motion blur with moving objects
• Brightness Test - Test screen brightness levels from 0% to 100%
• Burn-in Test - Detect OLED burn-in and image retention with special patterns

DEVICE INFORMATION:

• View detailed specs: device model, chip, iOS version, RAM, storage
• Screen info: size, resolution, refresh rate, aspect ratio, density

WHY SCREEN TEST?

• Ultra lightweight - under 500KB
• No ads, no tracking, no analytics
• No internet connection required
• Works completely offline
• Supports 20 languages
• Dark and Light themes
• Supports all iPhones including iPhone 17 series

Perfect for checking a new or used phone before purchase, verifying screen repairs, or testing display quality.