If you have trouble hearing the sounds while in a very quiet (about 20dB) environment, this may be due to personal hearing conditions. Even if you have low sound sensitivity or poor hearing, the effect on your brain waves is still the same, so we recommend that you do not turn up the volume.
Monaural beats can induce sleep when the volume reaches about 20 dB or more for the listener. 20 dB can be compared to a very small whispering sound. According to studies, monaural beats are effective in a wide range of volumes ranging from about 20 dB to 75 dB.
Numerous studies have consistently demonstrated the absence of risks associated with monaural beats. Nevertheless, it is essential to maintain a safe distance from devices when playing high-volume sounds to prevent any adverse impact on your hearing. Therefore, we strongly recommend adhering to our volume guide. Additionally, individuals who are epileptic or prone to seizures are advised against using our service.For further details regarding monaural beats, please refer to the article titled [Science of Monaural Beats] available in the My Page section.
If the volume is too loud for you, it may damage your hearing or disturb your sleep. We strongly recommend setting the volume to a low level where you can just barely hear the sounds.
The human brain produces five different types of waves: gamma (30-100 Hz), beta (12-30 Hz), alpha (8-12 Hz), theta (4-8 Hz), and delta (0.5-4 Hz). Monaural beats induce deep sleep by synchronizing our brain waves to those that are emitted during sleep, which ranges between alpha and delta.
Monaural beats are sound waves that are combined to synchronize your brain waves to a specific frequency. Miracle Night takes normal monaural beats to the next level and provides layered monaural beats that are optimized for inducing sleep. This patented algorithm can only be experienced with Miracle Night.
According to the results of several experiments and clinical trials jointly conducted with Yonsei University's Applied Brain Cognitive Science Institute, delta waves – the brain waves that are produced during sleep – emitted by test subjects increased by about 16% on average within 10 minutes of listening to monaural beats. One subject also experienced a 28% increase in just five minutes.
Inaudible frequency refers to any frequency outside of the range that can be heard by humans. Therefore, monaural beats that are mixed with inaudible frequencies cannot be physically heard.
Yes, listening to monaural beats with inaudible frequencies produces the same brain wave effects. According to research paper (1) and journal (2), our brains recognize auditory bits even if they are below the hearing threshold. Therefore, they are able to recognize monaural beats that produce inaudible frequencies as well.
1) Abeln V, Kleinert J, Strüder HK, Schneider S. Brainwave entrainment for better sleep and post-sleep state of young elite soccer players - a pilot study. Eur J Sport Sci. 2014;14(5):393-402. doi: 10.1080/17461391.2013.819384. Epub 2013 Jul 18. PMID: 23862643.
We strongly recommend using the app while charging your device. If the app runs while your device is low on battery, this may cause overheating or the battery may be quickly depleted.
Battery usage varies depending on the device’s manufacturing date, battery capacity, and other factors. As a point of reference, an iPhone 12 that was manufactured in 2021 uses about 35% of the battery when the app is turned on all night.
Overheating also varies depending on the device’s manufacturing date, memory, and more. Overheating usually occurs when the app is running while on low battery or multiple apps are running simultaneously.
The prices and benefits for each membership are as follows:
👉 Year-long unlimited booster: $90/year
👉 Month-long unlimited booster: $9/month
If you would like to sign up for a membership, go to My Page → ‘Premium Boosters’ and choose the right one for you!
Unfortunately, as of now the only available payment method is in-app purchases. We will continue to look into making other payment methods available soon. :)
Transferring your membership to another account is generally difficult, but if you leave us an inquiry with the information below in our ‘Contact’ section, we will check the purchase details then manually transfer your remaining boosters/membership.
1) The existing account that you purchased
2) The new account that you created** Please note that you must leave an inquiry with both accounts and jot down the same email address in each so that we can properly check your history.
Your membership pass may not be properly charged if an error occurs during the Apple Pay/Google Pay payment process. This is usually caused by an unstable network, so we ask that you make sure your network environment is stable when making any purchases. :) If the problem is not resolved or another payment error occurs, please reach out to us through the ‘Contact’ section!
According to App Store/Google Play Store policies, the rights to membership cancellations are owned by Apple and Google. Therefore, we ask that you refer to the links below to directly cancel your membership.
You can delete your account by clicking ‘Delete account’ at the bottom of the My Page section.
** Please keep in mind that you cannot restore your membership or subscription after deleting your account!
If you leave a detailed entry on the information that you would like to change in the ‘Contact’ section, we will check and get back to you as soon as possible :)
** If you would like to change your password, please log out first then click ‘Find my password’ to set a new one.