Screen Test: Dead Pixel Check
Burn-in, Touch & Color Test
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Find dead pixels in seconds with full-screen colors. Premium adds a touch grid, multi-touch, burn-in checks and a used iPhone check with a PDF report.
Check your iPhone display in seconds. Screen Test fills the screen with pure colors so dead, stuck or faded pixels stand out, and helps you test touch, burn-in and uniformity before you buy or sell a phone.
Free:
• Color test: white, black, red, green, blue, yellow, cyan and magenta at full brightness. Tap for the next color, long press to see its name.
Premium (one-time purchase, no subscription):
• No ads
• Touch grid: drag over every cell to find dead touch zones
• Multi-touch: see how many fingers the screen detects at once
• Gradients, gray levels and checkerboard: spot burn-in, banding and uneven panels
• Custom color: fill the screen with any color
• Stuck pixel fixer: rapid color cycling, with a photosensitivity warning
• Used iPhone check: run the tests in order, mark pass or problem with a note, share a PDF report and keep a history on your device
Who it is for:
• Checking a used or new iPhone before you buy it
• Finding dead pixels, stuck pixels and OLED burn-in
• Finding dead touch zones after a drop or a screen repair
• Repair shops checking a display before and after a repair
Bought Screen Test before it became free? Premium is already yours. Use "Restore purchases" in Settings if needed.
Tips: clean the screen first, test dark colors in a dim room and light colors in a bright room.
Languages: English, Turkish, German, Spanish, Portuguese, Japanese, French, Arabic, Ukrainian, Russian and Chinese (Simplified). To change the language, open iOS Settings, scroll to Screen Test and choose Language.
Privacy: no account, no camera or microphone access. Reports stay on your device. Ads are served by Google AdMob; you can choose whether to allow tracking. The stuck pixel fixer flashes colors rapidly and is not suitable for people with photosensitive epilepsy.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://yunusgunduz.com/pp/ScreenTester-PrivacyPolicy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Screen Test now speaks 11 languages, including Russian and Chinese.
To change the language, open iOS Settings, scroll to Screen Test and choose Language.
Bought the app before? Premium is already yours.
The developer, Yunus Gunduz, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yunus Gunduz
- Size
- 11 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 10 more
- English, Arabic, French, German, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Premium $2.99
- Copyright
- © 2026 Yunus Gündüz