Display Tester

Contains ads
7.6K reviews
Content rating
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About this app

DisplayTester makes it possible to test almost every aspect of your device's LCD/OLED screen. Using Google Cast it is possible to test the display quality of your TV. It is designed to allow full screen testing also on devices with soft keys (hiding the soft keys in ICS and later, immersive mode in KitKat and later).


-= Free features =-
◆ Dead pixel test: detect "dead pixels" by displaying a series of solid background color pages
◆ Color tests: contrast, gradient (banding) and saturation tests
◆ Gamma calibration tests (grey/red/green/blue)
◆ Viewing angle tests (This is useless for OLED displays)
◆ Wide gamut color test
◆ Multi-touch test
◆ Display performance tests
◆ Repair burn in - scrolling black & white bars
◆ Display measures info: screen size, GPU type, dpi, density-independent pixel size, OpenGL 1.x info, pixel format
◆ Real world pictures for reference and comparison
◆ 4-color gradient test with orientation change correction (Android 2.2 and higher)
◆ Pixel format & dithering tests
◆ Built-in font styles test
◆ Manually DPI measurement
◆ Color charts
◆ Touch screen dead spot tester
◆ System Fonts tester
◆ DIP / PX calculator

-= Pro features =-
◆ Full Google Cast support
◆ Repair burn in - noise (white, b&w, red, green, blue)

-= Soft key hiding in ICS/Honeycomb/JellyBean =-
Use the preferences menu option for this or simply long touch the display during a test is running.

-= Gestures =-
◆ Slide left-right: change test image
◆ Slide up-down: change brightness
◆ Long touch: switch between full screen and normal screen (Android 3.0 and higher)
◆ Double tap: hide or show the test specific settings dialogue (if available)

When the soft keys are hidden it is not easy to advance to the next screen: First tap to make the buttons appear, then a quick swipe for the next screen before the buttons are hidden again.

Please consider purchasing the Pro version to support further development.

If you are having a problem or you have a suggestion about a missing feature, the ONLY way it will get done is if you email me! :)
Updated on
Feb 18, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

7.13K reviews
Joesph Koen
August 3, 2022
The burn in fixer did it's best, actually works. My phone is prone to burn in since I read allot of web news and usually stick in a position where I don't scroll for few minutes. All the other tests is great info too! Also the ads, for once, in a free application, aren't annoying!! I don't mind the ads in this app. I haven't gotten any pop up ads, will change my review if wasn't occur, I hope not.
52 people found this review helpful
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Jenni Lee
October 20, 2023
I don't know how, but this fixed the problem I was having. my screen was darker with this horrid cast over it. seemed to happen out of no where. but then I did a test in this app that changed the contrast on my phone. when I bumped it up through this app, all of a sudden my screen was clear again and had its normal brightness back. however, I have learned my gamma is way off. 😆 I'm just happy I don't have to replace my phone just yet.
15 people found this review helpful
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Brendon Foley
September 12, 2022
Full disclosure: I've used both RELEASE & BETA versions since 2016 & find it superior for function testing & pixel analysis of modern color touchscreens incl. AMOLED. It CAN lessen or eliminate burn-in on SOME screens. It CANNOT FIX physical screen/ digitizer damage! To brain dead user "Coyote," dude, this app is named "Display Tester," not... "FREE DEFECTIVE DISPLAY REPLACEMENT FOR IDIOTS!" Honestly. With realistic expectations, you should find this display toolbox extremely useful. *Peace*
40 people found this review helpful
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What's new

* Preparations for Android 14
* Themed app icon (monochrome icon) added
* Material-You color tester added
* Bug fixes and optimisations