FITYCAL

FITYCAL uses 3D body scanning to track measurements, body fat percentage, and lean mass — that's genuinely different from the sea of apps that are just weight logs with prettier graphs. The focus on composition over the number on the scale is the move, though the big question is whether the scan accuracy actually holds up over time since that's the whole premise. I'd need to see some real-world data on reliability before calling it a win, but the concept is there.