51 reviews
Content rating
Everyone
1K+
Downloads
Content rating
Everyone
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About this app

This app is part of an MIT research project studying if we can improve deep sleep with gentle sounds and vibrations in sleep (slow wave entrainment). You can try the technique that we've been developing on your own device, or use the app to run studies with research participants.

For more information on the app and how it works, see https://www.media.mit.edu/projects/sleep-entrainment/overview/

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Experiment from MIT on improving deep sleep with rhythmic sounds and vibrations
Updated on
Sep 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Health and fitness and Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data isn’t encrypted
  • Data can’t be deleted

Ratings and reviews

8 reviews
Tara Milefchik
June 21, 2026
Absolutely eats up battery. Sometimes after draining the battery all night it will conveniently not record sleep, pushing the sleep study by yet another night. Or you click on the survey and it never opens. And then no longer exists. Seriously was not worth the $50 participant pay. Especially since you don't get it if you don't complete 6 nights. Too bad it's impossible to complete 6 nights.....
9 people found this review helpful
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Amanda Morrow
July 6, 2026
had lost of trouble with it not detecting sleep, so I could finish the trial. Finally contacted someone who had me hard reboot my watch, and now the app works fine. I was able to finish the trial.
3 people found this review helpful
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Audrey Rasmussen
July 17, 2026
Signed up for the test weeks ago and it only started working after a watch update. Drains battery from full to 5% when it runs now.
3 people found this review helpful
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What’s new

bug fixes
Content rating
Everyone
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App support

About the developer
Massachusetts Institute Of Technology
mitmlfluidinterfaces@gmail.com
77 Massachusetts Ave Cambridge, MA 02139 United States
+1 508-208-9215

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