







Your phone becomes a whistle — 8 loud sounds and an SOS pattern, hold to 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://www.youtube.com/watch?v=SD5VDFl2FPA
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