Whistle - Loud Whistle Sound

Hi, I'm the solo developer behind DKsequence. Whistle is an app for when you need a referee whistle right now: take out your phone and hold the button.

It blows only while you hold and stops the instant you release, just like the real thing.

■ What you get · Press-and-hold blowing with instant stop · 8 whistle sounds: 2 included (Whistle, Ambulance) and 6 PRO (Train Horn, Air-raid Siren, Emergency Bell, Vuvuzela, Rescue Whistle, Air Horn) · Triple blast and SOS emergency patterns · A neon sound-wave visualizer that moves with the sound, plus volume control · PRO sounds unlock for 24 hours after a short ad, or forever with a one-time purchase

■ Good for · Referees and coaches, dog training, attention calls, safety signaling and playing with kids

In a real emergency, always contact official emergency services first, and mind your surroundings and hearing at high volume.

▶ Get it on Google Play: https://play.google.com/store/apps/details?id=com.dksequence.whistle ▶ App page (DKsequence): https://dksequence.com/apps/whistle/ ▶ Trailer: https://youtu.be/SD5VDFl2FPA