Ruler - Screen Measure Tool

Turn your smartphone screen into a precise ruler. Measure real lengths with a simple touch and drag. 【Key Features】 - Touch & drag to measure lengths instantly - Switch between cm and inch units - Real-time measurement display - Automatic PPI detection for accurate results 【Precision Calibration】 - Credit card (85.6mm) calibration for pinpoint accuracy - Saved calibration — set it once, measure anytime - Optimized accuracy per device 【Easy-to-Use Design】 - Clean ruler interface with clear markings - Dark mode support - 10 languages supported - Intuitive unit toggle 【Perfect For】 - Quick measurements when you don't have a ruler - DIY, crafts, and sewing projects - Furniture placement and space planning - Students and professionals on the go No need to carry a ruler — measure anything, anywhere with your phone!