Harmonium - Sound Therapy0.1.10 - App Store

Harmonium is a sound therapy application that makes the rhythm of the moon and the sea permeate into you.

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Feature
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Harmonium creates healing sounds from the moon's astronomical location(moon phase and distance between the earth and the moon) and weather forecast (atmospheric pressure and tide level).

This healing sound consists of the sound of waves, the sounds of creatures, the sounds of rain and thunder, and a piano tuned to 432 Hz.

In addition, we refer to the brain science study that the relaxation of the mind and body will increase when the brain wave of a person becomes 8 to 13 Hz. Harmonium reproduces the phenomenon called Brainstem Frequency Following Response(FFR) to obtain the brain waves of this frequency.

Harmonium makes use of two types of FFR guiding sounds, 432Hz and 528Hz, according to the position of the moon and, while aligning with the tide level in real-time, changes the frequencies of the left and right sounds like the ebb and flow of the tide, guiding the brainwaves to 7.83Hz, a little lower than 8Hz.

Harmonium evokes a sense that perceive the rhythm of nature.

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Function
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Harmonium has three channels.

1. Concentration
Play only the ocean wave sounds.(45 min)
There are 24 ocean sound files in Harmoniums.

2. Relax
Added FFR guidance sound to the ocean wave sounds.(30 min)

3. Sleep
Ocean wave sounds,Creatures living around the ocean, Weather sounds of rain and thunder, Felt piano sound, and FFR guidance sound.(60 min)
When the moon leaves the earth, FFR guidance sound is 528 Hz, and when the moon approaches the earth, it is 432 Hz.
During the tide rise, add the target EEG frequency to the FFR guidance sound. Subtract when the tide is falling.

Ex.
At the moon moves away from the earth, the tide is rising
Left ear:528Hz + 7.83Hz = 535.83Hz
Right ear:528Hz + 0 = 528Hz
535.83Hz - 528Hz = 7.83Hz

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Notes
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Harmonium uses special sounds known as Frequency Following Response sound（A similar sound is binaural beats）.Therefore, please do not use this app in the following cases.

If you suffer from epileptic seizures.
If you suffer from heart disease.
If you use a pacemaker.
If you are driving a car or ship,bike,bicycle.
If you operating a machine.
If you are less than 12 years old.

If you feel physical or mental discomfort, please discontinue use immediately.

The tide level information is a forecast value(astronomical tide).
it differs from the tide level actually observed(measured tide level).
Do not use this application for voyage, diving, fishing.

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Subscription pricing and terms
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Harmonium can be used free of charge for 3 days after first installation.
If you use Harmonium continuously, please purchase a subscription with a 3-day free trial.

After purchasing a subscription, if you cancel at least 24 hours before your free trial ends, you will not be charged.
After purchasing a subscription, if you do not cancel and the 3-day free trial period expires, you will automatically start a paid subscription.

You will be charged to your iTunes account when you purchase a subscription.

You can turn off auto-renew subscription at any time in your Apple ID account settings.
If the purchase procedure is completed, refunds can not be made even if you stop the subscription.

You can use the free trial only for the first time.
You cannot use the free trial after the second time.

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Terms and Conditions / Privacy Policy
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Please read about our terms and conditions and privacy policy.

https://harmonium.gridsystem.co.jp/hp/terms.html
https://harmonium.gridsystem.co.jp/hp/privacy.html

Version History Updated the UI to display correctly on iPhone 17 series. 0.1.10 10/08/2025 New iPhone and iOS 18 are now supported.

System Requirements
Minimum: iOS 15 0.1.9 09/18/2024 Changed weather forecast service from DarkSKy to OpenWeather.
Compatible with iPhone 14 series. 0.1.8 03/08/2023 - Fixed - Program error. 0.1.7 10/14/2021 - Fixed - The channel selection buttons were not displayed in the correct position on some devices. 0.1.6 10/03/2021 - Fixed - Sound becomes inaudible After viewing an alarm or timer notification. 0.1.5 11/29/2020 Added support for iPhone Silent mode.
When your iPhone is set to silent, you won't hear ringtones or alerts, but Harmonium sounds will play through your iPhone speakers and your iPhone will vibrate. 0.1.2 11/21/2019 - Fixed - If the device language was not English, French, German or Japanese, it could stop at startup. 0.1.1 08/14/2019 - Updated - Added French and German to the user interface. 0.1.0 08/08/2019 - Fixed - An error in the volume dialog.
- Fixed - Sound stops during fade-out. 0.0.4 07/27/2019 - Updated - Some reduction of battery consumption.
The screen dims after a certain amount of time. Touch the screen to resume.
Please use this while charging when using for BGM of sleep.

- Updated - Display the channel description at startup. 0.0.3 07/20/2019 - Fixed - "Relax" doesn't work at moon phase 15.
- Updated - Wave sounds fine tuning. 0.0.2 07/04/2019 0.0.1 06/15/2019