BlueMon vs ScreenTest WK

BlueMonitor is a professional display diagnostic tool for smartphones. Run a full suite of fullscreen tests to inspect your screen for dead pixels, burn-in, color issues, uneven backlight, and touch problems — right on your device. Whether you are buying a used phone, checking a repair, or simply want peace of mind, BlueMonitor gives you clear, fullscreen patterns designed to reveal display defects that are easy to miss in everyday use. HOW IT WORKS Tap Start Testing and move through 18 guided fullscreen tests. Swipe or tap the sides of the screen to go to the next or previous test. Each pattern fills the entire display so you can spot stuck pixels, tinting, banding, and touch dead zones quickly. 18 BUILT-IN TESTS Solid Colors • Red, Green, Blue, White, Black, and Gray fullscreen fills — ideal for finding dead, stuck, or hot pixels. Stripe Patterns • Vertical and horizontal black-and-white stripes • RGB stripe pattern for color channel checks Gradients • Black-to-white gradient for banding and uniformity • Red, green, and blue gradients for tint and color transition issues Advanced Patterns • Pixel grid — inspect individual pixels and subpixel alignment • Color checker — compare color blocks across the screen • Dead pixel test — cycling colors to highlight defective pixels • Burn-in test — detect ghosting and image retention • Touch screen test — verify touch response across the entire display KEY FEATURES • 18 professional display tests in one app • Fullscreen immersive test mode • Simple tap navigation — no complicated setup • Works offline — no account or internet required • Lightweight and fast • Designed for iPhone and iPad PERFECT FOR • Testing a new or used smartphone before purchase • Verifying screen quality after a repair or replacement • Checking for burn-in on OLED displays • Finding dead or stuck pixels • Diagnosing touch screen issues • Comparing display quality between devices BlueMonitor is a practical utility for anyone who cares about display quality. No ads, no subscriptions — just straightforward screen diagnostics when you need them. Note: BlueMonitor is a diagnostic helper tool. Results depend on viewing conditions, brightness settings, and display type. It does not replace professional hardware calibration equipment.

ScreenTest WK is a collection of guided visual patterns for manual screen observation on iPhone and iPad. The app presents patterns and system-reported information; you decide what you see and record your own observations. MANUAL OBSERVATION PATTERNS • Solid colors and vertical color bars • Gray levels, gradients and tonal steps • Dark-area patterns and bright objects on black • Checkerboards and grids • A moving pattern with an estimated app-rendering FPS counter TOUCH VISUALIZATION View direct touch events delivered to the app by iOS, see the simultaneous-contact count, or draw across the screen to observe how the on-screen trace follows your finger. iOS does not provide the app with an expected touch limit for a particular model, so the count is not used as a pass/fail result. DEVICE INFORMATION AND NOTES View device and display information reported through public iOS APIs. Record your own checklist selections and notes, then share a locally generated HTML observation summary. IMPORTANT LIMITATIONS ScreenTest WK does not inspect or analyze the physical panel, automatically detect faults, certify device condition, measure the display's physical refresh rate, or determine whether a part is genuine or has been replaced. The FPS value describes only the approximate rendering rate of the app's animation. What you can see depends on the device, brightness, viewing conditions and your own observation. PRIVACY The screen-observation features run locally. No account is required. The publisher does not receive your device information, touch positions, checklist choices or notes. The app has no advertising, analytics or tracking. The complete app is available without payment. Optional consumable in-app purchases are tips that support continued development and unlock no features or content. Available in English and Polish. Requires iOS or iPadOS 17 or later.