Screen Edge Align

Ever wondered if your screen protector is slightly overlapping the display area of your iPhone? Screen Edge Tester is a simple yet powerful tool that helps you instantly verify whether your screen protector is obscuring any part of the visible screen. How It Works The app places colorful arrow markers along all four edges and rounded corners of your screen, right up to the display boundary. If every arrow is fully visible, your screen protector is perfectly aligned. If arrows on any side appear cut off or hidden, that edge is being covered. Key Features ◆ Arrows precisely follow your iPhone's screen corner radius ◆ Four distinct colors for each edge — easy to identify at a glance ◆ Supports iPhone X through iPhone 17, all models ◆ Automatically detects your device and matches its exact corner curvature ◆ Works offline — zero data collection, zero privacy concerns ◆ Clean, minimal interface — no ads, no in-app purchases Use Cases • Check screen protector alignment after application • Verify screen integrity when buying a used iPhone • Compare coverage quality across different protector brands • Confirm proper screen assembly after a repair One look is all it takes.