How accurate are these sleep tracker devices?

Discussion in 'iPhone Accessories' started by yalag, Jul 16, 2013.

  1. yalag macrumors 65816

    Joined:
    Nov 18, 2007
    #1
    I'm looking into buying a wearable device (something like the Jawbone UP or Fibit flex) that allows me to track my sleep. I'm interested in getting as accurate data as possible as I don't have good sleep. Does anyone know how good these devices are at tracking and which brand has it best?
     
  2. darster Suspended

    Joined:
    Aug 25, 2011
    #2
    Not very good. They base it on movement, which is not very good at telling you how good a sleep you had. You need something to track your REM sleep, etc, which can only be done by tracking your brain waves.
     

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