Adding Obesity tracker to OpenMRS android client

I would like to add an obesity tracker to the OpenMRS android client obesity tracker is a part of SmartHealthCarre and wikis wiki( my personal project) the caloriemeter tracks the calories burned while doing physical activities like wlking , running etc and Food tracker will track amount of calories taken there fore making a visualisation for the user’s calories intake vs calories burned assisting him about his health and food habbits also predicting his risk about various disease etc. will be happy to here your views please comment !!