Use APKPure App
Get Whistle old version APK for Android
You can blow a whistle. Use for sports game referees, practice coaches, etc.
You can blow a whistle.
Use it for sports game referees, practice coaches, gymnastics, marching, cheering, dog training, police, security, traffic control, disaster relief, SOS, etc.
The whistle will be heard for as long as you press the screen.