Palo Alto, California-based SleepRate has launched a sleep app, based on sleep analysis algorithms and Cognitive Behavioral Therapy for Insomnia (CBTI) protocols, which were licensed from Stanford University's School of Medicine, Psychiatry, and Behavioral Sciences. The system is available for $99.99 in SleepRate's online store or on Amazon.com, although only to those in the United States.

SleepRate's system includes a Polar H7 Bluetooth heart rate monitor and a smart alarm, which aims to help wake people up at the right time in their sleep cycle. The user of the SleepRate system first tracks his or her sleep every night for five nights so that SleepRate can establish the user's sleep patterns. From there, a user can see data in the SleepRate app, which includes sound bites of the user snoring and samples of loud noises from the user's environment that may have disturbed him or her.

“Short term sleep issues affect work and day-to-day activities, while chronic insomnia may lead to a surge in serious health problems such as: coronary heart disease, stroke, diabetes, obesity, and/or injury from accidents,” SleepRate’s founder, Dr. Anda Baharav, said in a statement. “Physicians focus on detecting medical causes of poor sleep, yet this disregards psycho-physiological and environmental issues that compromise sleep, and account for as much as 85 percent of all cases. SleepRate uncovers all three causes, and deals with the last two: psycho-physiological and environmental sleep disruptors.”

Finally, the app offers users a personalized plan, which is broken down into a list of goals to improve sleep. Some of those goals might include creating a specific wakeup time every morning to stabilize the user's circadian clock or creating a buffer zone between the user's busy day and bedtime so he or she can go to sleep in a more relaxed state.

Throughout the process, users also receive additional tips from the app to help lower anxiety or improve sleep in other ways.

While the company emphasizes that they are not providing a medical service, SleepRate says they can help people who have trouble falling asleep at night, wake up at night and have trouble falling back asleep, wake up early in the morning and can't get back to sleep, don't feel rested in the morning, feel sleepy during the day, have difficulty getting up and starting the day in the morning, and snore.

In the span of a month, various companies have launched sleep trackers, almost one year after sleep tracking company Zeo shut down. Towards the end of December, a group of Polish inventors launched San Francisco-based IntelliClinic, which was crowdfunding a brainwave-sensing smartphone-connected sleep mask. The campaign beat its $100,000 goal by $338,000.

In early January, Basis Science added an advanced sleep analysis feature for its wristworn, multisensor health tracker and Withings announced a sleep tracker with no wearable component. Instead, the Withings sleep system consists of a sensor placed in the user’s bed and a bedside device that serves as both lamp and alarm clock, which are controlled by an app. Most recently, Sleep Number partnered with hospital sensor company BAM Labs for consumer smart bed. (Correction: A previous version of this article incorrectly stated the sleep sensor company was Beddit.)