After studying all the smartest options, we decided that the Withings Sleep Tracking Pad is the best option for a standalone device with lots of great information. But we’ve also picked some excellent trackers for more specific purposes, so take a look at our list!

Withings has produced a number of excellent trackers, and this sleeping mat is one of the best smart sleep devices around. Put it under your mattress, and it will keep track of your sleep cycles, breathing, snoring episodes, disturbances and more. Using the app, you can chart your sleep, watch for problems, and monitor conditions like sleep apnea to see what improves your sleep.

If you don’t like looking at charts, Withings provides a simple sleep score that sums up how your night went. You can also get personalized suggestions and tips on how to get a better night’s sleep based on your results. It’s one of the best tracker options available, and it doesn’t require adding any devices to your nightstand!

This particular sleep monitor is designed for a very specific purpose: It measures blood oxygen levels and is designed for medical conditions where this may be an issue. If the monitor detects extra-low blood oxygen or problems with your heart rate, it has a small vibrator that will buzz to wake you up. The whole thing is powered by a rechargeable battery that lasts 12 to 16 hours, so there’s no annoying cords or cables to worry about. It’s also really simple to use, turning on automatically and downloading data when connected to your computer.

The Lookee Ring is actually a finger sensor that’s designed for more serious monitoring purposes. Specifically, it records blood oxygen levels and heart rate during sleep to watch for problems. It can also vibrate to warn if blood oxygen levels fall below a preset level that you can customize for your situation, using the related Lookee app. The Ring lasts around 16 hours on one charge, and charges in about two to four hours. It’s a great device for pairing with sleep apnea treatments or other serious illnesses where monitoring sleep health is important. However, if you aren’t looking for a tool to use in these situations, you may find the price too high for more casual sleep tracking.