I have been tracking my sleep for almost two years now using my Fitbit. I started with the Fitbit Ultra and then moved on the the Fitbit One after it came out. In October 2013 I found out about the Sleep Cycle (Link) app for the iPhone. For weeks, Sleep Cycle was listed as the best-selling health app in Germany, where currently (as of January 2014) it is in second place.

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Christian Stade-Schuldt

Data Engineer @ HERE IoT innovation lab| Full-time geek | Cyclist | Learning from data

Data Engineer @ HERE

Berlin, Germany