Slumber One: Insomnia, Sleep 4+

Deeper Sleep with Science

Merlin Collective, LLC

    • 4.7 • 67 Ratings
    • Free

iPhone Screenshots


Please note: You will not be able to use this app unless you've already received your access code from the Slumber One website.

Get Better Sleep for Life with the #1 Mobile App for Insomnia developed at Harvard.

Slumber One helps you fall asleep faster and stay asleep longer, using the #1 science-backed approach for improving sleep. Join hundreds of thousands of other patients who have improved their sleep permanently using psychology.

Slumber One takes just 5 to 10 minutes a day, and uses a clinically-tested curriculum for helping you sleep better. Our program is based on research by top sleep psychologists, therapists, and researchers.

Our curriculum includes topics around:

* Stimulus control
* Cognitive restructuring
* Undergoing sleep restriction therapy
* Building strong sleep habits
* Calming down a racing mind
* Relaxation techniques
* And much, much more

Slumber One contains over 100 science-backed modules designed to help you sleep better but is personalized based on your specific sleep needs, so you’ll always see the modules most useful for you.

In additional to our core sleep curriculum, Slumber One also contains a comprehensive library of nature sounds, breathing exercises, progressive muscle relaxation exercises, bedtime stories, sleep music and guided meditations to help you relax and release anxiety.

Some of the items in our relaxation library include:
* Soothing sounds of rain, waves, fire, and wind
* 4-7-8 breathing exercise
* Gratitude meditation
* Deep sleep meditation
* Full body scan
* 5-point muscle relaxation
* Bhramari pranayama breathing technique
* And more

You can also integrate sleep data from your wearables with Slumber One through Apple Health.

Disclaimer: In the United States, Slumber One has not been cleared by the FDA for use in diagnosis or treatment of a disease or condition, such as Insomnia Disorder.

What’s New

Version 1.0.28

Bug fixes and UI improvements

Ratings and Reviews

4.7 out of 5
67 Ratings

67 Ratings

david.w.87 ,

Really, actually works

I found Slumber One at a point in my life where I hadn’t slept for weeks. I mean that literally. I track my sleep and I had gone for at least 3 weeks where Fitbit told me I literally had slept 0 minutes and 0 hours in the past 3 weeks.

I tried melatonin. I tried cutting out all coffee. I tried reading a book in bed. I tried meditation. I tried weed. Nothing worked.

Some days I would get tired. So frickin tired that I thought for sure I would be able to sleep that night. Nope. “Fooled you” my brain would say. I would lay in bed so exhausted that I felt like I could die, but I just wouldn’t fall asleep.

When I found Slumber One, I bought it on impulse, but I honestly didn’t think it would work. But I had already spent hundreds of dollars buying things so why not try something else. They’re from Harvard. Maybe it’ll work. If not I can tell people even Harvard can’t help me.

The first week using Slumber One I didn’t think much was changing. More money down the drain. But then the second week, by some miracle I actually slept. I slept for 2 nights. My Fitbit counter was finally no longer at 0. Third week I slept for 5 nights. By the fourth week, I actually slept every single night.

If you’re reading this and you can’t sleep, then do yourself a favor and get this app. This really, actually works. I don’t know how. Some of the stuff they tell you to do just seems completely illogical, but somehow, through their sequence of instructions, I can sleep again.

Developer Response ,

Thank you for the 5-star review. We're glad that you found our program to be helpful. We wish you the best in your journey to improving your sleep.

tyree_fritzx ,

It takes work    

Need to use it regularly and do the stuff they tell you. Some of it seems kind of silly, but overall has been quite soothing.   ​    ‌‌ 

fonniedk ,

What does this cost?????

Have just spent nearly 30 minutes trying to find out the cost for this app. I don’t want to fill out your sleep questionnaire or give my personal information until I know the cost. It looks interesting, but several reviews have mentioned that it is “pricey”. Could someone please define “pricey” for me since the developers don’t seem to include that information or indicate anywhere that there are in-app purchases.

Developer Response ,

Hi there, thank you for your feedback. You can find pricing information on our home page ( under the FAQ section. Feel free to email us at if you have additional questions or if we can assist you in any way.

App Privacy

The developer, Merlin Collective, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Contact Info
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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