A simple and intuitive application that allows you to play sounds of a strictly defined frequency.

An excellent bonus for users will be the function of automatically cleaning the phone's speakers from water. No complicated settings need to be made. Cleaning the speaker occurs by pressing just one button!

Another great feature of the application is the current noise level measurement. Noise measurement requires access to a microphone. If for some reason you declined the request to grant access when you first started the program, go to settings-privacy-microphone and allow the sound level meter to access the microphone, after that the program will work correctly.

Premium subscription:

You can purchase an auto-renewing subscription to get professional access. Note: Payment will be charged to your iTunes account when you confirm your purchase. The subscription automatically renews for the same price and the duration period depends on the selected plan (weekly, monthly, semi-annual or annual), unless canceled at least 24 hours before the end of the current period. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can turn off the auto-renewal feature at any time by changing your account settings. The following subscriptions are available (Price may change depending on your country):
• 1-week subscription - from US$ 0.99
• 1-month subscription - from US$ 1.99
• 1-year subscription - from US$ 4.99
• 1-week subscription with 7 day free trial - from US$ 0.99
• 1-month subscription with 7 day free trial - from US$ 1.99
• 1-year subscription with 7 day free trial - from US$ 4.99

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