[update]
The app crashes when me as the main user try to change the picture. And the user ui is different for me than my other family members.
[old]
I do have another device to track my body fat it called skulpt its pretty accurate. However I have 14% body fat and this smart scale results are not accurate it shows 20% body fat and Im pretty sure Im not.
I bought this scale to track my weight.
Mathyoooo about YUNMAI, v2.0