Test your screen.
Every pixel.
Dead pixel detection, touch responsiveness test, and multi-touch diagnostics.
Perfect for buying or selling a used phone.
4.3 ★Rating
3Test Modes
0Permissions
Dead pixel detection, touch responsiveness test, and multi-touch diagnostics.
Perfect for buying or selling a used phone.
Cycle through solid colors — red, green, blue, white, black — to spot stuck or dead pixels.
Draw on the screen to verify touch responsiveness across every area of your display.
Test how many simultaneous touch points your screen supports.
Tests run in true full-screen mode for maximum visibility.
Zero permissions required. The app never accesses your data, camera, or network.
Under 1 MB. Install it, run your test, done.
Essential tool before buying or selling a phone.
Get it on Google PlayGet it on App Store