Works very well, worth a try!

I purchased my Apple Watch a couple weeks ago and love this app. You must have updated iphone software for it to pair correctly with the watch for this app. I think thats why some on here may say it doesnt work or sync to see the results on the phone app. Although you can also see some of it on the watch, too! For me I am pleased with the ease of reading the charts and how accurate it is tracking my sleep which I am working on reaching my sleep goal and have been doing with this! The only odd thing I notice is steps on some nights while sleeping that I certainly have no knowledge about. I dont think I am a sleep walker or have been so thats a little distressing to me! The only time I didnt have steps during my sleep activity was one night over the weekend after having a couple cocktails at dinner and thinking, man I am going to sleep like a log tonight, which I definitely did! That was also the only night I noticed my heart rate was much higher during sleep as well. I definitely recommend this app to anyone wanting to track their sleep its detail is really awesome!!

Elizabeth Anne about Sleep Tracker - Sleep Pulse 3, v2.02