This is a free version of the popular Dog Repeller-App with adds!
Protect yourself from dangerous dogs while cycling or walking or jogging with the ultrasonic Dog Repeller. It produces a high frequency sound that the human ear can not detect yet it is able to deter vicious dogs without harming them.
A must-have for every mailman!

Now with adjustable frequency

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For best results use an iPhone 4 or
newest generation iPod and set
system volume to maximum