Whistle Blow

Blow Whistle turns your iPhone into a crisp, realistic whistle, no hardware needed. Trigger it your way: blow into the mic, shake your device, tap the screen, or remotely trigger it from your Apple Watch. Perfect for getting attention, coaching, pranks, or quick sound effects.

Dial in exactly how you want it to respond with adjustable microphone sensitivity and full volume control. Pick your favorite whistle sound and, if you like, display a live mic level meter for visual feedback.

Features:
- Blow-to-whistle with adjustable mic sensitivity
- Tap or shake to trigger, no mic required
- Apple Watch support: trigger your iPhone from your wrist, or whistle right from the watch when your iPhone is out of reach
- Siri, Shortcuts and Action button support (iOS 16 or later)
- Choose from multiple whistle sounds
- Volume control for any environment
- Optional on-screen mic level meter
- Works offline, lightweight, and fast

Privacy-Friendly:
- Microphone access is only used for the blow-to-whistle feature. You can still tap, shake, or use Apple Watch without granting mic permission.

Note:
Blow Whistle is for fun and everyday use. It is not a substitute for safety devices or emergency signaling.

Compatibility:
- iPhone and iPad
- Apple Watch (requires paired iPhone)