Whistle Sounds is a free Android app by Sound Jabber that offers personalized whistle ringtones for your Android device. It provides a wide range of whistle sounds that can be saved as call, notification, alarm, and message tones. The app is easy to use, and you can set your favorite whistle sound as your ringtone by simply pressing and holding the desired sound.

The app offers various whistle tones and types that can be used in different settings, such as soccer fields, running tracks, basketball courts, or swimming pools. With its high-quality sounds, you can play the whistle sounds loudly and be heard from a distance.

Whistle Sounds app also allows you to set any sound as your ringtone, alarm tone, or notification tone. The app can work in the background, and the auto-play sounds mode is available. Additionally, the app works offline after download, and it's entirely free to use.