I've tried Sleep++ because I'd like to get rid of my Jawbone UP which right now I keep only because of the sleep analysis.
Funny thing is that my UP measures less sleep time than the watch does - in particular, small (< 5 min) awake times are not measured by the watch. So I'm wondering which one is more reliable.
None of these sleep tracker and its algorithm are worth it. Bogus algorithms.
I can imagine that Apple is working on this in the background. Here is my dream sleep tracker:
1. Measures activity (via arm movement; but also what type of arm movement; tossing and turning your body is more restless than just simple arm movement).
2. Measure heart rate and determine energy expenditure (similar to what HeartWatch is doing now).
3. Measure blood oxygen level...this is key and with enormous potential!!
Oxygen measurements can be done now because our Apple Watch heart rate sensor can measure oxygen saturation. Apple just needs to turn it on. Of course, turning it on requires more software to support it.
But imagine a device that can HELP diagnose SLEEP APNEA! AW is not a medical device...but it can aid in diagnosing and monitoring sleep apnea...a huge help for the medical field! I can see where it will alert users if their oxygen level drops during the night and encourage them to seek medical help. Sleep apnea is a very UNDER-diagnosed disease.
Hopefully, we will see some advancement (esp in the medical side of things) next month.
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Wait for the 2. The hardware on the 1 is very slow and the software still beta like...
I don't know...Apple own software apps run just fine IMO.