Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Sleep Mask - White Noise Screenshots

iPad

iPhone

About Sleep Mask - White Noise

Sleep Mask is a white noise app that can be used as a sleep-aid or distraction blocker. It produces high quality white, pink, and brown noise sounds as well as some variations of these.

This is the FREE, ad-supported version of the Sleep Mask app.

What is White Noise?

White noise is made up of many different frequencies of sound combined together at equal intensity. Its name is analagous to white light which is a combination of all of the different colors of light in the visible spectrum.

What is Pink Noise?

Pink noise is a variation of white noise that places emphasis on bass, or the lower frequencies of sound. Its called pink noise, because if you were to do the same with the visible light spectrum you would get a pinkish color.

What is Brown Noise?

Brown noise is a variation of white noise that places stronger emphasis on the lower frequencies of sound than Pink noise. In the light analogy this would yield a deep red color. But since the noise coincides with a mathematical model called Brownian motion it is instead called Brown noise after the physicist Robert Brown.

What's New in the Latest Version 17.0.1

Last updated on Jan 6, 2024

Old Versions

Fixed bug with AirPlay output selection picker on iOS 17.

Version History

17.0.1

Jan 6, 2024

Fixed bug with AirPlay output selection picker on iOS 17.

17.0.0

Oct 25, 2023

Update for iOS 17.

14.3.0

Jun 16, 2021

Stability improvements and bug fixes.

Thoughts or feedback? Please leave a review here on the App Store.

14.2.0

Jun 4, 2021

Stability improvements and bug fixes.

Thoughts or feedback? Please leave a review here on the App Store.

14.1.0

Jun 4, 2021

Stability improvements and bug fixes.

Thoughts or feedback? Please leave a review here on the App Store.

14.0.0

Jun 1, 2021

Updated for iOS 14. New sound visualizer feature.

Love the App? Please write us a review.

1.2.1

Mar 30, 2015

This app has been updated by Apple to display the Apple Watch app icon.

• Fix for bug where the message "[Environment: Sandbox]" would appear when trying to make an In-App Purchase.

If you're still unable to complete a Restore or Purchase after this update please try the following: (1) Delete the app, (2) Restart your device, (3) Re-Install the app and attempt the purchase again. If this doesn't work please send me an email at: support@ultabit.com

1.2

Feb 26, 2015

• Fixed bug where previous purchases would not restore properly.

1.1

Feb 16, 2015

Note: Bug fix for restoring previous purchases will be addressed in the next update (8-10 days from today 2/17)

• Updated for iOS8

1.0

Feb 12, 2013

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