+1 to the Nokia body scale! I’ve been using it for my training and weight loss and it’s been a great unit. I haven’t had a DEXA in a while, but I’ll be going in for one soon and will report back with the numbers to compare against the scale.
One thing to keep in mind is to make sure you set the height correctly, otherwise the body fat estimations will be slightly off. (The doctors had told me growing up that I was 5’11, but that was either incorrect, or my mild scoliosis has cut me down a minor peg 
so I was bummed when I corrected the height and the body fat increased)