Dog Whistle is a free Android app developed by JetMob.dev, categorized as a Utilities & Tools application. It is designed to help dog owners train their pets and communicate with them effectively. The app offers numerous sound frequencies that can be selected and adjusted to suit the user's needs.

One of the newest features of the app is the ear protection mode, which is specifically designed for the most sensitive ears. This feature ensures that the sound frequencies are not too loud or harmful to the dog's ears, making it a safer and more comfortable experience for both the owner and the pet. Overall, Dog Whistle is a useful tool for dog owners who want to train and communicate with their pets in a more effective and safe way.