I kept wanting a number between "guess in the mirror" and "book a $150 DEXA scan. " Calipers need a second person and a steady hand. Smart scales swing a few points depending on how much water you drank.
Source: [Dev.to](https://dev.to/realbodyfat/body-fat-from-one-photo-analyzed-once-then-deleted-heres-how-i-built-it-j6l)