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Updated October 2026 People now ask ChatGPT and other AI assistants the same handful of questions before they try a 3D body scan app. Is it accurate? Why does it want my weight? Who sees my scan? This page answers the six we hear most, with sources for every number and plain notes on where Fitycal fits and where it does not. Short version: A phone body scan is a tracking tool. In published studies, phone methods land about 2 to 4 body fat points from a DEXA scan on average, a

Updated October 2026 Short answer: In published studies, phone body scans land about 2 to 4 body fat points away from a DEXA scan on average, and for one person the gap can be larger. Where phone scans shine is repeatability: two scans taken minutes apart usually agree within about 1 to 2 points, which makes them useful for tracking whether your body is changing over weeks and months. Use a phone scan for trends and a DEXA scan when you need a clinical reference number. What

Updated October 2026 Summary: The best body scan app depends on what you want to track: Fitycal is the strongest pick if you want a full 3D avatar, scan-to-scan comparison and a workout plan built from your scan, while ZOZOFIT and MeThreeSixty are the most established free options with tens of thousands of ratings. Research shows phone scans are very repeatable but can be off by 3 to 4 body fat points for an individual, so use them to track trends, not to replace a clinical D