This product comes with a free iPhone app that makes tracking your measurements simple and effortless. It also works perfectly as a waist measuring tape, helping you record areas like your waist, arms, legs, chest, and more — all directly inside the app. The companion app automatically saves your data, shows your progress over time, and displays your results through clear, easy-to-read chart. Whether you're focused on fitness, weight loss, muscle building, tailoring your clothing, or monitoring body changes, this body tape measure helps you stay consistent and see your improvement.