Goniometer is a powerful yet simple Android app for measuring joint angles with AI. It automatically detects key joints, including elbows, shoulders, hips, and knees, displaying precise angles next to each joint. For optimal accuracy, simply point your phone’s camera perpendicular to the plane of the joint’s movement and snap a picture. The image is saved directly to your phone's gallery, making it easy to track progress and share measurements. Ideal for physiotherapists, athletes, and anyone interested in mobility analysis.