Thanks to that, it offers far more advanced sleep tracking than its competitors with an in-depth analysis of your sleep cycles, durations, and any interruptions. You slip it under your mattress, plug it in, and leave it to do all the hard work for you, allowing you to sleep encumbered. If the idea of wearing a wrist strap all night is unappealing then the Withings Sleep Analyzer is the solution for you. Sound quality could be better, and you need to take some time to get used to them, but the Kokoon Nightbuds are a clever alternative to wearing something on your wrist, and they're a great way of incorporating relaxation techniques into your routine. It uses that information to lower the volume of the recording you're listening to. From there, it determines how long it took you to fall asleep and how long you slept. The Nightbuds use an infrared light system to monitor your skin at night, tracking your heart rate and whether you're asleep. In our Kokoon Nightbuds review, our tester noted that it could take a bit of practice to master fitting them securely for the night, but once they're in, they're quite comfortable even if you toss and turn in the night. When tied into the MyKokoon app, it's possible to look up guided relaxation exercises and natural soundscapes or listen to a podcast that is designed to soothe your mind. While it isn't a fitness tracker, so it won't help out during the daytime hours, these are a good option for helping you sleep better, as well as tracking how well that sleep is going.

We think the in-ears are the better sleep tracker option because they're comfier to sleep in than the over-ears, which do appear further down our ranking (more on how the two compare in our Kokoon Nightbuds vs Kokoon Relax sleep headphones face-off).

Kokoon makes what we think are the two best sleep headphones around, and both come with sleep-tracking features built in. If you've landed on this guide because you're struggling to sleep, you might want to explore our ranking of the best mattresses (opens in new tab) or pick up one of the best weighted blankets (opens in new tab). But we're getting ahead of ourselves! To get a better insight in your sleep patterns and how to improve your slumber, read on for our top picks for the best sleep trackers and shopping advice so you can find the best prices. However, if you want all the sleep data, you should look at a dedicated sleep tracker like the Withings Sleep Analyzer, which sits under your mattress and keeps tabs on everything that happens at night. While its heart rate and GPS accuracy aren't 100%, it's still a great all-rounder that's suitable for most people (if you're interested, here's exactly how Fitbit tracks sleep (opens in new tab) and how our fitness editor, Matt K, tracked his sleep for a month with the Fitbit Charge 5 (opens in new tab)). There's some crossover between the best sleep trackers and the best fitness trackers (opens in new tab) in fact, the number one sleep tracker right now is the Fitbit Charge 5, which holds the number two spot in our fitness tracker guide.

Wearable sleep monitor