Foldlight: Display Lab

Start a display inspection with one tap. Foldlight collects app timing, advances through exact color and grayscale patterns, guides your touch check, and saves a score with the evidence behind it. Rotate, fold or unfold your Duo as you inspect. Each display keeps separate visual observations and touch coverage. Untested checks earn no points, including an unvisited Duo panel. Timing is reported separately and never earns hardware-health points. Pause any pattern, step forward or back, or hide all controls for an unobstructed view. Inspect the patterns yourself; Foldlight does not automatically detect dead pixels. Drill into a saved result or open Tools for: • Pixel inspection with white, black, pure red, green and blue, plus amber. • Dark, mid and light gray uniformity fields, grayscale steps and a smooth ramp. • Crease and alignment grid with live hinge status. • Touch coverage that follows physical areas through rotation. • A moving target, app frame cadence, interval chart and slow-callback counts. On the wide inner display, Tools and Journal show the list beside the selected test or report. Keep an inspection history, compare earlier coverage and concerns, recheck individual results, and share a report. Rechecks update the selected saved scan. Everything stays on your device unless you share it. No account, advertising, subscription, analytics or network service. $1.99 US, paid upfront. Foldlight does not certify hardware health, repair a panel, measure luminance or measure physical panel refresh rate. Display settings and viewing conditions affect what you see. Requires iOS 27.1 or later.