# ScreenTest - Dead Pixel Check — Screen Diagnostics

> Screen Diagnostics (iPhone/iPad app by Son Nguyen.)

- Source: https://appshunter.io/ios/app/screentest-dead-pixel-check/id6760121949 (this page in markdown: same URL + `.md`)
- Developer: [Son Nguyen](https://appshunter.io/developer/1882735820)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 1 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese, Korean and 10 more
- Released: 2026-03-12
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/screentest-dead-pixel-check/id6760121949/reviews.md

## What is ScreenTest?

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.


## Version history (last 1 release)

### 1.0 — 2026-03-12

No release notes.

## More apps by Son Nguyen

- [IP Info - What's my IP Address](https://appshunter.io/ios/app/ip-info-whats-my-ip-address/id6760742822)
- [Âm Lịch VN – Lịch Vạn Niên](https://appshunter.io/ios/app/am-lich-vn-lich-van-nien/id6761284852)

All apps by Son Nguyen: https://appshunter.io/developer/1882735820

## Related topics

[tester screen](https://appshunter.io/ios/topics/tester-screen) · [display test](https://appshunter.io/ios/topics/display-test) · [display tester](https://appshunter.io/ios/topics/display-tester) · [snip screen](https://appshunter.io/ios/topics/snip-screen) · [lifesaver screen](https://appshunter.io/ios/topics/lifesaver-screen) · [touch screen check](https://appshunter.io/ios/topics/touch-screen-check) · [phone repair screen color test](https://appshunter.io/ios/topics/phone-repair-screen-color-test) · [burn check](https://appshunter.io/ios/topics/burn-check) · [oled](https://appshunter.io/ios/topics/oled) · [pixel contrast checker](https://appshunter.io/ios/topics/pixel-contrast-checker) · [color test for your screen](https://appshunter.io/ios/topics/color-test-for-your-screen) · [nscreen broke](https://appshunter.io/ios/topics/nscreen-broke)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*