Screen tester - pixel check

A simple, fast, and secure local diagnostic tool to check your Phone screen for dead pixels, display burn-in, and touch digitizer issues.

Screen Tester is the ultimate local diagnostic utility designed to help you verify the health and functionality of your device's display. Whether you are buying a used phone, checking your device after a drop, or suspecting a display fault, Screen Tester provides the necessary tools to inspect your screen thoroughly and easily.

Key Features:

Pixel Color Test Identify dead, stuck, or faded pixels effortlessly. The app cycles through pure, high-contrast primary colors (Red, Green, Blue, White, and Yellow) at maximum screen brightness. This allows you to spot any pixel irregularities, LCD bleeding, or OLED burn-in with complete visual clarity. Simply tap the screen to switch between test colors.

Touch Digitizer Grid Test Ensure that every part of your touch screen is responsive. The Grid Test overlays a matrix on your screen. By swiping and dragging your finger across the display to fill the grid, you can quickly identify dead zones or ghost touch issues where the digitizer may be failing.

Why use Screen Tester?

Buying Pre-owned Devices: Quickly launch the app to ensure the screen of the secondhand phone you are buying is in perfect working condition. Post-Repair Verification: Check if your newly replaced screen is fully functional and free of dead pixels or unresponsive touch areas. Routine Device Health Checks: Keep an eye on your display's quality over time. Privacy First Screen Tester is built with your privacy in mind. It is a 100% local diagnostic tool. We do not collect, store, or transmit any personal data, usage statistics, or diagnostic results. The app works entirely offline, ensuring that your data remains securely on your device.

Download Screen Tester today and ensure your display is flawless.