Do sleep apps really work? Sometimes, experts say

Everyone wants a restful night's sleep, but how many of us actually get one?

We're told to turn off electronics before bed, but certain apps promise results to help you get the rest you need. Experts say downloads of several sleep-related apps increased by 20-percent in the past year.

Some sounds apps, like white noise apps, help sleepers by blocking out barking dogs or rowdy neighbors. Others take on your racing mind, leading you through guided imagery, meditation and even hypnosis to calm you.

Can't sleep? Ask yourself these six questions

A third type of app tracks your sleep patterns -- such as how long it takes you to fall asleep and how long you spend in deeper stages of sleep.

Finally, there are apps that use cognitive behavioral therapy, or CBT. It's similar to techniques a trained therapist would use to help you correct bad sleep habits.

"Cognitive behavioral therapy is the best first step in treating chronic insomnia," said Diane Umansky with the American Academy of Sleep Medicine. "That’s because it can help you change the thoughts and behaviors that can lead to sleep problems.”

Melatonin: Know the risks and benefits of the sleep supplement

Studies show the cognitive behavioral apps may work best with in-person CBT therapy.

While they may work for you, the fine print on most apps say that they're marketed as “entertainment” or “lifestyle” apps, not medical devices, meaning their effectiveness hasn’t been evaluated by the Food and Drug Administration.