About this app
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 from your wrist - 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)
Latest release
What’s New
Accessibility Updates - Full VoiceOver support for all interactive elements - Auto-disables blow sensor when VoiceOver is on to prevent speech from triggering the whistle - Respects Reduce Motion by skipping the shake animation
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 22, 2026 · 4:37 AM $0.99
Screenshots
