Not sure

I like the app with my Vue to track my steps. I havent used it to track my calories but I do like it to track my sleep. Im not sure how accurate it is though. Last night it says I slept for 8 hrs. 11 min. total. 4 hrs. 10 min of light sleep, 4 hrs. 1 min of deep sleep and 19 minutes of awake time. Unless Im reading it wrong, it tells me I had almost equal amts of light & deep sleep. Yet, the color coded bars show a lot more blue bars indicating more deep sleep. I have 8 blue bars & only 5 purple bars with few orange bars. The bars show double blue, single purple, double blue, single purple, single blue, single purple, double orange. If you run your finger over it, the blue (deep sleep time) is longer than the purple. Also, even though it says I was awake for only 19 min total, when I run my finger over the double orange bars, it shows about 1 hour of awake. I know I was not awake that long last night. So did I really have more deep sleep?? Confused!!

Laura buck about iFit | Revolutionary fitness tracking