Groove Vision
Hold an iPhone Pro a hand's width above the record. The ring turns green when distance, flatness, tilt and steadiness all pass, the camera reads the surface, and the LiDAR sensor reads the depth of every mark in four close-up quadrants. The result card leads with an estimated grade and a confidence pill, and marks the quadrant that set it. You decide the grade underneath.
LiDAR only on iPhone Pro and iPad Pro. The grade is Spinstack's estimate; you set the final one.
How Groove Vision works
