Point your iPhone Pro at someone and HowTall reads their height in real time. ARKit body-pose finds head and feet, and the LiDAR scanner projects those points onto the floor plane for an accurate measurement in cm or ft/in. Fully on-device — no accounts, no analytics, no servers. Camera and depth frames are processed in memory and discarded. Free, no IAP. Requires an iPhone with LiDAR (12 Pro or later, any Pro/Pro Max). iOS 17+.