Dog Whistle is a free Android app developed by Fun Buddy and falls under the category of Utilities & Tools. This app is designed to train your dog, teach new tricks, prevent barking, and improve behavior. The app also serves as an anti-dog repellent whistle.

The app is straightforward to use; you need to touch and hold the whistle image to play the sound. You can choose the whistle frequency from 100hz to 20100hz based on your dog's training needs.

Overall, Dog Whistle is an excellent app for dog owners who want to train their dogs using a simple and effective method. Download it for free and enjoy the benefits of having a well-trained dog!