Here is another sleep tracker that helps you track your heart rate, respiration rate, body movements, and patterns to improve your sleep quality. The FitSleep uses α waves to help you fall to deep sleep faster. The device learns about you as you use it.
FitSleep provides you with sleep reports and tips to help you get a better night’s sleep. Just put it under your pillow or mattress, and you are set. More information is available here.