# Pixel Checker - Monitor Test — Dead Pixel & Screen Tester

> Dead Pixel & Screen Tester (iPhone/iPad app by YEONJU LEE.)

- Source: https://appshunter.io/ios/app/pixel-checker-monitor-test/id6476964168 (this page in markdown: same URL + `.md`)
- Developer: [YEONJU LEE](https://appshunter.io/developer/1700080990)
- Category: Utilities, Productivity
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.2 · 1 MB
- Languages: American English
- Released: 2024-02-06
- Data updated: 2026-06-19
- User reviews in markdown: https://appshunter.io/ios/app/pixel-checker-monitor-test/id6476964168/reviews.md

## What is Pixel Checker?

Easily check your display for dead pixels and screen quality issues.

A free, full-screen monitor test tool — select only the tests you need.

【Tests Included】
• Dead Pixels — Spot black dots on a white screen
• Solid Colors — Detect off-color pixels in Red, Green, Blue & Black
• Uniformity — Check brightness consistency across the screen
• Color Gap — Verify inner/outer color contrast accuracy
• Gradient — Test smooth color gradation rendering
• Sharpness — Check text clarity and contrast inversion

【How to Use】
1. Select the tests you want
2. Tap 'Start Test' → full-screen mode activates automatically
3. Use left/right arrows to navigate between tests
4. Completed tests are marked with a checkmark badge

Korean & English supported / Dark & Light theme


## Version history (last 3 releases)

### 1.3 — 2026-06-13

- UI Improvement

### 1.2 — 2024-12-02

- 스크린샷 개선
- 각 화면 내 스타일 개선
- IOS의 경우 광고 표시 제외처리

### 1.0 — 2024-01-31

No release notes.

## More apps by YEONJU LEE

- [두람쥐 \| DG](https://appshunter.io/ios/app/dg/id6477472769)
- [듀비 \| 똑똑한 여유자금 가계부](https://appshunter.io/ios/app/id6738839576)

All apps by YEONJU LEE: https://appshunter.io/developer/1700080990

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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 2026-06-19.*