KaliTrue vs PixelCheck

The KaliTrue app is designed to help people calibrate their displays to most accurately reflect colors. A user manually adjusts their display to show a white screen as "pure white", and KaliTrue allows them to measure the screen to see if it's indeed showing pure white, and if not the app tells them what needs to be adjusted to correct it. The app does not automatically calibrate your display... there are already apps for this but they require specialized hardware. This app is essentially a measuring device that assists you in manually calibrating your displays by showing you what needs to be adjusted. The project home page is at KaliTrue.app

Buying a used iPhone? Just had your screen repaired? PixelCheck gives you a full guided screen check and six focused tests to verify your display is perfect — with a report you can share. GUIDED SCREEN CHECK Run every test in sequence with clear instructions, give each a pass or fail, and finish with a summary. Share the result as a report — proof of your screen's condition when buying or selling. DEAD PIXEL TEST Cycle through 11 full-screen colors — white, black, red, green, blue, yellow, cyan, magenta, and three gray levels. Dead pixels and stuck pixels stand out immediately against solid colors. PIXEL FIXER Found a stuck pixel? Rapid color flashing can help revive it. Position the screen and let it run. BACKLIGHT BLEED TEST A pure black screen reveals light leaking around the edges of LCD displays. TOUCH SCREEN TEST Draw across a grid overlay to verify every zone of your touch screen responds — with true multi-finger support. Track your coverage in real time. OLED BURN-IN TEST A slow-moving gray block and uniform gray screen reveal ghost images, uneven brightness, and burn-in damage on OLED displays. Adjust the gray level to catch subtle issues. SCREEN INFO View your device model, screen resolution, pixel density, display type, refresh rate, and current brightness — all in one place. WHY PIXELCHECK? - No ads, no tracking, no internet required - Works completely offline - Tiny app size, instant launch - Supports iPhone and iPad - Screen stays awake and at full brightness during tests PERFECT FOR - Buying or selling a used iPhone or iPad - Checking a screen after repair - Verifying OLED burn-in on older devices - Testing touch response across the full screen Simple, fast, private. Open the app, run the check, share the proof.