Water Cleaner - Clean Speaker

Speaker Cleaner plays sounds that can help you test your speakers.
With the help of the decibel meter, measure ambient sound levels in real-time and monitor the noise around you.
Create sounds between 0 and 20,000 Hz using Frequency Testing.
Premium subscription:
-Payment will be charged to iTunes Account at confirmation of purchase. 
-Subscription with a free trial period will automatically renew to a paid subscription. 
-Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period at the rate of the selected plan. 
-Subscriptions and auto-renewal may be managed by going to Account Settings after purchase. 
-You can cancel your subscription or free trial in the iTunes settings at least 24-hours before the end of the free trial period. 
-The cancellation will take effect the day after the last day of the current subscription period and you will be downgraded to the free service.

Subscription options:
Weekly Price: $ 2.99
Monthly Price: $3.99
6 Month Price: $12.99
Annual Price: $14.99
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Support: [email protected]