Can PowerTutor app measure exact whole power consumption of device's GPU?

I'm developing face detection app using OpenCL for heterogeneous devices with CPU-GPU. My app uses CPU - GPU simultaneously, so I want to measure app power consumption, comparing only GPU version which most calculations are executed in GPU kernel. I found [PowerTutor](https://play.google.com/store/apps/details?id=edu.umich.PowerTutor) app. It measures power consumption of each app. The PowerTutor app measures about utility of CPU, LCD, 3G, WiFi respectively and weighted average of power consumption. Can PowerTutor app measures exact whole power consumption of devices which uses GPU?