Justin Redman is an associate staff writer on the sleep beat and has contributed to Wirecutter’s coverage of mattresses and other sleep products. Set up your phone by the bedside (as with most sleep tracking apps, it’ll have to stay charging), and head off to dreamland. This is the most intuitive and convenient app we tested and the only one that gives detailed recommendations for improving sleep. As Smith said, “Your first sleep is the least accurate. Sleep is mysterious. Best Sleep Tracker Apps for iPhone; Which sleep tracker app would you like to download on your Apple Watch? When Justin (a moderately loud snorer who wears nasal strips most nights) compared a dedicated snoring-detection app called Do I Snore or Grind? If that describes you, you’re probably better off relying more on how you feel throughout the day to figure out how well you slept. Sonar: This is the same technology that helps bats and submarines get around. ‎Become a better sleeper using 100 years of sleep science. Personal sleep tracking is a new science—the app makers haven’t nailed accurate readings yet, and the apps are often not great at telling a typical user what to do with the results. The more you use it, the more data it collects, the more helpful it can become.”, All in all, the accuracy and precision of personal sleep-tracking devices still leave much to be desired, regardless of the device or the technology. Everyone sleeps, but sleep trackers aren’t for everyone. The smart alarm wakes you up with gentle sounds (like chirping birds) that gradually increase in volume, as opposed to a jolting buzz. Just like every other sleep tracker apps, Runtastic Sleep Better also tracks your sleep cycle, monitors dreams, and improves your bedtime habits. Then we confirmed that in addition to keeping our data secure, the apps could export that data (reason being, companies come and go, and you wouldn’t want your information to disappear with them). It should help you improve your sleep—and SleepScore (iOS, Android) does that better than any other sleep-tracking app we tested. 8 Best Android Sleep Tracker App List For 2018 1. With that in mind, we’ve reviewed 10 of the most accurate sleep trackers available in 2020. You then have a small data processor connected, and … So can SleepScore improve your sleep? The free app comes with a variety of sound categories, such as Rain & Water, Nature & Forest, and more technical sounds like white, pink, and brown noise. Sleep Cycle; Sleep Watch by Bodymatter; Withings Health Mate; Pillow; AutoSleep; Sleep Tracker; Sleepzy; HeartWatch; Sleep++; Sleep Pulse 3 #1. You’re advised to choose any app the suit your needs. Trust this app to give you a scientific and structured data to help you track, monitor and ultimately sleep better. Benefits of Using a Sleep Tracker. Thank you for signing up to Tom's Guide. ... Sleep Cycle is a popular app that uses the iPhone's built-in motion tracker to monitor your movements during sleep. The free version provides general sleep advice and a record of your sleep for seven days at a time. In 2020, Justin again surveyed the sleep-tracker app offerings for iOS and Android and found that the four apps we tried in 2018 were still the most popular apps and had the most helpful-looking features. In September 2020, Apple released the Apple Watch Series 6 and Apple Watch SE, which both offer sleep tracking using built-in accelerometers and the new watchOS 7 operating system. However, the ring does not collect much data while you’re active, rendering it mostly useless as a fitness tracker. Both of us selected “perfect your sleep” as our goal in the premium version of the app, but it also offers six other options to choose from, including “sleep longer,” “wake up less,” and “sharpen my mind.” Our choice, in turn, placed us on an “improve your sleep hygiene path” and led us to a list of sleep-optimizing strategies, such as avoiding heavy or high-acidity meals. Accelerometers might be useless on a foam mattress, which are inherently good at motion isolation, but they perform more accurately on wearables. Dhvanesh . Joanne could often corroborate her middle-of-the-night awakenings, comparing the results from the SleepScore app—which uses sonar (sound waves emanating from the phone on her night stand)—with the chicken-scratched times in her sleep diary. You will receive a verification email shortly. Note: On Android, the sleep sonar feature is only certified for certain phones like the latest models of the Samsung Galaxy, Note, and Google Pixel. Unlike SleepScore, which provides research articles and bios of its scientists, Sleep Cycle doesn’t list any academic research about its technology on its site. Simply tap the Trends button, and—voilà!—any factors you typed in the night before, plus any Apple Health data, are automatically correlated with your sleep and shown in a way that even a third-grader could figure out. From this, the app gives you a sleep score and a variety of metrics to gauge your sleep quality. We found SleepScore's data and analysis easier to understand than the more confusing graphs or percentages of other apps. This app is good for people who just want to see sleep patterns and how they correlate with diet and exercise. Headspace is more than just one of the best relaxation apps for mindfulness and guided meditation. The larger dataset, compared to other sleep tracking apps, helped Justin become more cognizant of his sleep and body in general. They can determine if you are getting quality sleep and recommend changes to your sleeping habits to improve your sleep quality. It records how long you slept and shows the result when you wake up in the morning. On the Android and iOS app store, you'll find a variety of apps — sleep trackers, sleep therapy apps and other tools that aim to help you get a restful night's sleep. It also insisted that he had two nights where 90% of his sleep was spent in deep sleep, which is unlikely (by contrast, Pillow recorded 42% deep sleep, and the Oura Ring recorded 63%). An in-app purchase of $6.99 unlocks a toolkit of additional features to aid sleepers, such as a sleep cycle adjustment tool, options for custom music and sounds and pre-sleep visuals and cues to help sculpt your dreamscape. Both watches provide a Wind Down menu, and you can view your sleep trends in the iPhone Health app, but unlike SleepScore and Sleep Cycle, the watches don’t allow you to track your sleep stages. Users can adjust the volume levels of music, sound effects and vocal tracks to achieve the desired effects; with more than 10 billion possible combinations of audio elements, the app won't repeat itself any time soon. You can get started with a free app, or splurge two to three dollars for a paid sleep-monitoring app. Download this best sleep tracking app for Android and iOS. As for Android phones, it works with the Samsung Galaxy S7, S7 Edge, S8, S8+, S9, S9+, Note 8, and Note 9, as well as the Google Pixel 2 XL. But not only it is good with looks, also it has some unique features. The Sleep Solution: Why Your Sleep Is Broken and How to Fix It, American Academy of Sleep Medicine website, assistant professor of computer science, Brown University, Consumer Sleep Technology: An American Academy of Sleep Medicine Position Statement, resident physician, department of otolaryngology, University of Buffalo, research director of the Interdisciplinary Center of Sleep Medicine at Charité University in Berlin, A Critical Review of Consumer Wearables, Mobile Applications, and Equipment for Providing Biofeedback, Monitoring Stress, and Sleep in Physically Active Populations, professor of psychiatry, neurology, and nursing at Johns Hopkins University School of Medicine, and director for its Center for Behavior and Health, professor of neurology, University of Washington, and director of the UW Medicine Sleep Clinic, neurologist and owner of Charlottesville Neurology and Sleep Medicine, 5 Ways to Beat Coronavirus Anxiety So You Can Sleep, How to Sleep Well (or at Least Better) While Traveling. As long as the phone is reasonably close to you (say, on a nightstand), the app should be able to track your sleep accurately. SleepScore also stores information in controlled facilities, whereas Sleep Cycle may store information on third-party servers or databases the company doesn’t have complete control over. While SleepScore does not refer new users to the privacy policy upon sign-in, you can easily navigate to the policy within the app and on its website. Here is the list of Best Sleep Tracker App for better and sound sleep. Top 10 Best Sleep Tracker App Our Top Picks in 2020. AutoSleep Tracker. That’s why sleep tracking typically pairs movement tracking with other technologies, such as optical heart-rate monitoring. On iOS, a Night Shift mode reduces blue light on the display. Why not get the same effect with its mobil app? For this app—and all of the apps, for that matter—you really need to go all in to get any meaningful benefit. And besides, sleep labs have their own limitations. Having undergone thorough testing, we hope that you’re going to … But she found that simply learning more about her sleep was worth the annual fee. While this is an economical way to begin looking at patterns, user reviews are mixed. We’ve written this guide to help you. In our tests, the results from wearables were as varied as those of the phone apps, but some researchers believe their accuracy can improve over time. In addition to the usual smart alarm and sleep logging features, Sleep As Android offers such extras as a library of soothing sound lullabies, natural sound wake-up noises and Captcha-style wake-up tests that make sure you've properly woken up, instead of clumsily fumbling for the alarm button. Sleep As Android. It looks almost exactly like Fitbit's sleep interface, and the app - by Sleepmatic - is unapologetic about it all. Sleep Cycle is an intelligent sleep tracker app for your Apple Watch. But it doesn’t offer custom advice and tracks less data than SleepScore. Because it offers some niche features that others can’t able to offer at this price range. You can also access tips through SleepScore for how to prepare for better sleep, as well as a smart alarm clock. Download on Google Play. What about using a Fitbit, Apple Watch, or other wrist wearable? But the heart rate (99.9% compared with an electrocardiogram) and HRV (98.4% compared with an electrocardiogram) readings are very accurate. (It turned out he had sleep apnea too.). Surf City's Sleep Well Hypnosis app provides users with guided meditations designed to help you drift peacefully to sleep. But it’s as intuitive as SleepScore to set up, and perhaps because of the limited data output, the resulting sleep reports are pretty easy to understand. SleepScore was the only app we tested that provides bios of four doctors and scientists on its science team and advisory board, and Mehmet Oz (yes, that Dr. Oz), who is also an equity investor. For Android users, the Twilight app does the same by automatically adjusting the colors of your phone's display based on the time of day, gently toning down the blue and introducing a red filter as evening approaches and night falls. But sleep-tracking apps promise to help you understand when you cross the threshold between waking and sleeping—and what happens in between. The best sleep apps for your smartphone can help you get a full night of rest. We like Sleep Cycle (iOS, Android) almost as much as SleepScore, and it's compatible with both iPhones and Android models. While a sleep diary proved to be less useful in the middle of the night (he’s a deep sleeper), he was still able to evaluate the apps and trackers based on the quality of the data and the user-friendliness of the interface. and then automatically starts tracking. We did like the smart alarm, which doesn’t turn off unless you perform particular tasks designed to wake you up for good (such as shaking your phone or doing math problems). Sonar may work well for someone with consistent breathing patterns. We’ve rounded up all of our recent coronavirus coverage. © Unlike Pillow and Sleep as Android, which both required watching (and rewatching) an instructional video, SleepScore’s startup process was straightforward. This app uses the world’s most advanced sleep tracking system, and therefore, you can improve your sleep from day one. It also syncs your data with iCloud and Apple Healthkit. Download Rise: Sleep & Energy Tracker and enjoy it on your iPhone, iPad, and iPod touch. We’ll update this post as we publish more advice. Sleep Cycle. Using an iPhone 8 and the Google Pixel 3a, Justin retested these four apps to assess their updated features. Sleep Tracker 24/7 As you’ve already guessed, there’s an app for that! Sleep Cycle’s privacy policy isn’t as easy to access as SleepScore’s, and the app’s use of a phone’s microphone to detect audio could make some people nervous. If you're having trouble sleeping through the night, the best sleep apps may be able to make a world of difference for your health. A built-in dream log then allows users to quickly jot down their dreams and store them, or share with the app's community. For more detailed information, check out our review of the Oura Ring. Of course, Apple officially brought sleep tracking to the Apple Watch with watchOS 7. These apps use your phone’s accelerometer to monitor your breathing and body movements while you sleep. In our 2018 test, Sleep Cycle seemed to catch fewer of Joanne’s sleep-diary-recorded awakenings within a half-hour time frame compared with SleepScore, though it didn’t seem too off when it came to assessing her sleep as a whole. Unlike SleepScore, Sleep Cycle doesn’t show how long you were in each stage of sleep. Snooze Yourself. PrimeNap: Sleep Tracker might not have the most creative name or sharpest interface, but it does come with some well-thought-out features, and an optional smart alarm clock as an in-app purchase. PrimeNap. Pillow is one of the best iPhone apps for sleep that monitors your nightly rest. It ditches wearables or the need to place your phone on the mattress to record your movement, instead using your phone’s microphone and speakers like a sonar station to record your sleep movements. Sleep Time is another one of the sleep tracker apps with a subscription price. It can track your sleep pattern and provide you with a graph of your sleeping records. He liked having a tracker that keyed him into what was happening with his body, and in many cases, the data the ring recorded confirmed how he was feeling. Have you ever been wondering if it’s possible to control and analyze your dreams? This process, called polysomnography, is the most reliable method of sleep tracking. Notable … Sleep Cycle’s privacy policy appears upon sign in, but we found the policy difficult to understand, and the site’s homepage doesn’t link to it. Because devices that use optical heart-rate monitoring are on your body, said Penzel, “in principle they should be more accurate as they develop better algorithms, but that takes time.”. For people who want an uncomplicated interface with an intuitive design, we recommend SleepScore (which works a lot better with iPhones than with Android phones) as well as Sleep Cycle (which is as compatible with Android models as it is with iPhones). However, the Oura Ring is more expensive than our app picks ($300 for the cheapest version of the ring; you’d have to use SleepScore Premium for six years to spend that much) and isn’t a very good fitness tracker, so it isn’t as versatile as other wearables. Pillow. In addition to the detailed metrics and smart alarm features, Sleep Time+ comes with soundscapes to help you sleep and HealthKit integration for iOS users. The app tracks your light sleep mode phase and wakes you up with soft alarm tones that can range from 5 mins to 90 mins until you wake up. Luckily, technology can help. A few apps we recommend are Runtastic PRO (for running), Cyclemeter (for bicycling), and Strava (for both running and cycling). While other apps picked up on Joanne’s awakenings, none attempted to report specific times. We focused on apps because they’re accessible and relatively inexpensive, which makes them far more appealing to most people. As a senior staff writer at Wirecutter, Joanne Chen has covered a range of sleep topics; she’s the author of our “Five Days to Better Sleep” challenge, our guide to sunrise alarm clocks, and our advice on how to choose the right mattress. Here’s what we looked for in the apps, in order of importance: It was impossible to test all of the sleep apps on the iTunes store and Google Play, so we started by choosing the most downloaded apps that also had ratings of more than four out of five stars. As a result, sleep-tracking apps work best for people who are only casually looking for clues as to how they might sleep better at night and emerge the next day feeling energized. Please refresh the page and try again. You then have a small data processor connected, and a smartphone app where you’ll receive the sleep data. The Oura Ring’s sleep tracking wasn’t significantly more or less accurate compared with our top app picks (66% agreement with PSG versus 73% agreement with PSG for SleepScore). Your phone’s speakers emit sound waves at frequencies inaudible to humans. Download the Sleep Cycle app today for the easiest way to get a good night's sleep. This page is powered by a knowledgeable community that helps you make an informed decision. Of course, if you suspect a medical issue, you should see your doctor for actual treatment; SleepScore’s Doctor Report feature prints out 30 days’ worth of data that you can take to your appointment. Sleep Cycle takes the scientific approach to waking you up after a good night's rest. AutoSleep: Diese iPhone Sleep Monitoring App überwacht automatisch die Qualität und Länge Ihres … (He did.) We kept that in mind when we made our top two picks, which provided the most helpful information and were easiest to use. (But you probably knew that already.) These picks then underwent further testing against a few popular wearables. Not getting enough shuteye can lead to trouble concentrating, remembering and even operating a vehicle. Cost: free Get it for iOS or Android . The Withings Sleep Pad Sleep Tracker is integrated with the best sleep tracker app that we tried, offering a large variety of information about your sleep quality. Unlike SleepScore, which works only with iPhones 6 or newer and certain Android phones, Sleep Cycle is compatible with all iPhones and Android phones. The 5 Best Rated Sleep Trackers & Monitors (+Wearable Options) For 2020. You can even use this app in flight mode which in turn enhances its prediction. That’s why we examined brands to come up with this list of the sleep tracker app. The app monitors your sleep cycle (both light and deep sleep). If you have an iPhone or a compatible Android phone, we think SleepScore (iOS, Android) will do the best job of helping you improve your sleep. Put your head down for 40 winks -- the best sleep apps for iOS and Android are here to help you nod off, track your sleep, and wake up feeling refreshed. It then offers breakdowns as to different sleep stages such as REM and deep sleep, along with heart rate recording and sleep quality assessment, in combination with Apple's built-in Health app. (Full disclosure: Joanne briefly freelanced at Oz’s eponymous magazine before it folded, though she’s never met him.). Note: These sleep tracking apps aren’t in order of preference. Pzizz helps users slip gently into sleep using a combination of music, words, sound effects and binaural beats to help you de-stress and re-energize. It also has lullaby tunes to help you sleep. When Justin tested the sonar, he found that the app rarely counted REM sleep, even as the Oura Ring and Pillow did. Hoping to improve your sleep with an app is not unlike hoping to exercise more with an app. Wirecutter is reader-supported. We couldn’t recommend Pillow for most people because it’s available only for iOS and you must place your phone on your mattress (by your pillow—get it?) In the morning—after being gently woken by a smart alarm—you’ll get a report on how long you slept with a breakdown of time in each sleep phase. Sleepa is another simple and helpful app that provides a variety of restful soundscapes that you can easily mix and match together to create a relaxing ambience to help you fall asleep. Read: Best Android Emulators to Run Apps on PC Paid Sleep Tracker Apps! A smart alarm feature lets the app gently ease you to wakefulness at the best time based on your sleep activity and the time you've set. (Usually this happens due to some issue with the microphone—in Justin’s case, we suspect his phone wasn’t high enough, and the signal got blocked by some blankets or sheets.). However, the company says that the app records movement and snoring, not voices, and that the sounds are collected, processed, and analyzed locally and then discarded after a user-specified time (one night, 20 nights, 100 nights, or never). While other apps picked up on Joanne’s awakenings, none attempted to report specific times. Most sleep trackers will then offer personalized recommendations for improving your sleep. Transparency Disclosure – We may receive a referral fee (at no additional cost to the buyer) for products purchased through the links on our site or other applicable pages. Free Headspace users get a limited library guided meditations and Sleepcasts, with premium subscribers who pay $12.99 a month getting access to the full library with more than 40 different courses and shorter meditations. It was the easiest to set up, it gave the clearest analysis of sleep trends, and it was the only app we tried that gave actionable advice for reaching specific sleep goals. The app tracks all your sleep movement for gaining accurate information about your sleep cycle. Calm considers itself mainly as a meditation app. The app is free and ad-supported, with a premium subscription removing advertising and adding extended data tracking and sleep noise recording. Tiny LEDs in the band shine a light through your skin to capture blood flow. But be warned, we found that we snoozed more often when using the app. Get instant access to breaking news, the hottest reviews, great deals and helpful tips. For instance, when the app “hears” less movement, it assumes that you’re in deep sleep; when it “hears” more movement, it assumes you’re in light sleep. In our tests, it offered less data than any of the other apps we tried, at least in terms of the specific stages of sleep. The app then sends you a notification in the morning when you unlock your iPhone with a report of your night's sleep quality and activity. It doesn’t work with the iPhone 5, 5s, and SE but is compatible with any iPhone with iOS software 10.3.3 or higher (essentially, an iPhone 6 or higher). Sleep Cycle. For these reasons, it is one of the best free sleep apps, but to get the full experience you will need to make in-app purchases. Once users set a listening duration (10 minutes to 10 hours), Pzizz generates a unique sleeping soundtrack from its library of built-in media. A few years before that, Joanne had shooed her husband off to the same clinic to have his snoring checked out. You can rely on the app’s science-backed advice to improve your sleep. Broadly speaking, there are two types – wearable devices and non-wearable devices. So, while it may not be 100% free, the reason it made my list as the best free sleep app is that there are so many awesome free features in the app that can be used so that people may not even need to make an in-app purchase. It’s also pretty expensive—you would need to have the Oura Ring for six years before the annual SleepScore premium cost equals the up-front cost of the ring. Last, but perhaps not least, Joanne is personally familiar with professional-grade sleep tracking. But if you enjoy geeking out on exploring your quantified self, come what may, give these apps a go. There has even been research showing that these data points, along with the ring’s oxygen-rate and skin-temperature readings, could help detect some illnesses, such as COVID-19, before symptoms begin. Kelly Baron, PhD, associate professor of psychology, University of Utah School of Medicine, phone interview, August 6, 2018, Jeff Huang, PhD, assistant professor of computer science, Brown University, interview, July 20, 2018, Seema Khosla, MD, et al., Consumer Sleep Technology: An American Academy of Sleep Medicine Position Statement, Journal of Clinical Sleep Medicine, May 15, 2018, Adrian Ong, MD, resident physician, department of otolaryngology, University of Buffalo, email interview, August 2, 2018, Thomas Penzel, PhD, research director of the Interdisciplinary Center of Sleep Medicine at Charité University in Berlin, phone interview, August 15, 2018, Jonathan M. Peake, Graham Kerr, and John P. Sullivan, A Critical Review of Consumer Wearables, Mobile Applications, and Equipment for Providing Biofeedback, Monitoring Stress, and Sleep in Physically Active Populations, Frontiers in Physiology, June 28, 2018, Michael T. Smith Jr., PhD, professor of psychiatry, neurology, and nursing at Johns Hopkins University School of Medicine, and director for its Center for Behavior and Health, phone interview, August 6, 2018, Nathaniel Watson, MD, professor of neurology, University of Washington, and director of the UW Medicine Sleep Clinic, phone interview, August 2, 2018, W. Chris Winter, MD, neurologist and owner of Charlottesville Neurology and Sleep Medicine, phone interview, July 24, 2018. But by juxtaposing, say, sleep quality or deep sleep, in the apps that offer that data, you can get an idea of how all-over-the-board they are: We didn’t focus on the discrepancies between the different readings for specific variables, such as sleep quality, because it’s not the absolute results retrieved over the course of one night that matter, but the trends gleaned from many nights. To learn more, please read our full disclosure page here. Justin Redman is an associate staff writer covering sleep for Wirecutter. $1.99: Download Sleep Tracker. An $2.99 in-app purchase within this best sleep app unlocks premium features such as a range of background soundscapes, the option to set the meditation on loop and a "Sleep Booster" that uses binaural beats to help induce a restful mood. We also love that it has more than a dozen smart-alarm sounds and lulling sounds to choose from (compared with just around half a dozen of each from SleepScore), so getting up and going to bed both feel a lot more pleasant. Calm is another relaxation app that finds a place on our list of best sleep apps. You’ve got an optimal sleep sanctuary” popped up. It's designed to help you relax and drift off to sleep. Adults need 8 hours of sleep each night, but most Americans report an average of 6 hours. SleepScore doesn’t offer nearly as many sleep-sound options as Sleep Cycle, nor (in our opinion) are those sounds as pleasing. SleepScore’s main flaw is that it only works with iPhone 6 and higher and a limited number of Android phones. It uses your phone's sensors to measure the quality of your sleep and wake you up at the optimal time. Like Withings Sleep, it's a flat tracker for your bed, although it goes above your mattress, under the sheets. (Note: The interface for these apps has changed slightly since our 2018 test, but the information highlighted remains the same.). When it comes to sleep-tracking apps, it’s easy to get caught up in the functional details. This means the app can track you from your nightstand instead of from under your mattress. This app continually monitors your sleep patterns and wakes you up when you are … ... making it accessible to both apple and android fans! Try these expert-recommended anxiety reducers. Future US, Inc. 11 West 42nd Street, 15th Floor, The White Noise app helps generate a soothing audio soundscape to help its users fall comfortably to sleep, making it one of the best sleep apps around. Sleep tracking apps, devices, and bedding accessories are all designed to help you do this. Tom's Guide is part of Future US Inc, an international media group and leading digital publisher. After a while, the app offers sleep hygiene advice too, though we found it to be more obvious than SleepScore’s sleep advice. This results in a softer display that's easier on the eyes and less likely to mess with your sleep cycle. 13. Download the best sleep tracker app for Android and iOS. 3. We also encourage you to read about … Digipill features a variety of purpose-built guided meditation sessions and soundscapes called "digipills", each designed for a variety of purposes, with the relaxing T-Break digipill coming free, and the rest as in-app purchases. The snoring feature isn’t particularly sensitive. When you buy through links on our site, we may earn an affiliate commission. After more than a hundred hours of research, including interviews with eight sleep scientists, and more than a month spent testing four popular sleep-tracking apps (along with a range of wearables, including the Oura Ring), we found that no app offers objectively accurate sleep analysis, and they can’t replicate the experience of a traditional sleep lab. Another unique feature about Sleep Score is that it sells accessories that can further analyze lights and sounds of the room to better analyze your sleep patterns. It uses the phone’s accelerometer and gyroscope to track movement (along with sound-sensing technology and Apple Health data), it presents about as much sleep information as SleepScore, and it provides helpful sleep tips and lifestyle correlations, too. “One night in a lab is in no way representative of our sleep life; it’s one night of sleep in a strange sleep environment hooked up to a lot of equipment,” said Nathaniel Watson, MD, co-director of the University of Washington Medicine Sleep Center and a neurologist who developed the sonar-based technology that was used at the university before it was licensed to SleepScore. You don’t need to press any button at all, all you have to do is just sleep. And even though its sleep-stage information can be inconsistent, “looking at trends, instead of absolute values, can be helpful,” says Seema Khosla, MD, the medical director of the North Dakota Center for Sleep.