Whistle Blow5.1 - App Store

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)

Version History New in 5.1
- Siri & Shortcuts: ask Siri to blow the whistle, or add it to the Action button or a shortcut
- Apple Watch now plays the whistle on its own when your iPhone is out of reach, using the sound you picked
- New blowwhistle://play link for automations
- Now requires iOS 15 or later 5.1 Sep 19 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 5.0 Feb 8 - Choose your whistle sound!
- Many new whistle sounds added (Police, Sports Coach, Joy, Male, Sci-fi, Steam Locomotive, Cartoon Slide Up, and more)
- Added haptic feedback for taps and whistle triggers
- Fresh app design and updated layouts, plus a new launch screen
- iPad experience improved: edge-to-edge backgrounds and full-screen settings
- Adjustable volume and blow sensitivity controls
- Optional microphone level meter you can show or hide
- Smoother playback with a brief cooldown to prevent accidental repeats
- iOS 13 or later now required 4.10 09/23/2025 - Minor bug fixes 4.9 04/30/2025 What's New

Apple Watch Support
You can now remotely play the whistle directly from your Apple Watch.

Improved UI
Enjoy an even more elegant user interface with a clean, clutter-free main screen. 4.8 06/07/2024 - Minor Bug Fixes
- Adjust Whistle Tempo 4.7 03/13/2023 - Update for latest iOS
- Minor bug fixes 4.6 06/01/2022 - Minor bug fixes 4.5 06/22/2021 - Minor bug fixes 4.4.1 01/24/2021 - New whistle sound with more character!
- Fixed infinite whistle loop when sensitivity was set to maximum
- IOS14 Updates 4.4 10/18/2020 - Slight screen adjustment for newer devices 4.3.1 02/12/2020 - New IOS compatibility updates
- Minor bug fixes 4.3 08/12/2019 - Performance Improvements
- Minor bug fixes
- IOS Updates 4.2 08/07/2018 + Performance improvements
+ Minor bug fixes
+ IOS 11 compatibility
+ iPhone X support 4.1 11/13/2017 - App now works in all orientations on all devices
- Whistle is now animated
- Fixed settings bugs
- Fixed microphone sensitivity issues
- Updated for latest IOS computability 4.0 09/13/2017 - IOS 9 Compatibility Updates 3.4 10/18/2015 - IOS 8 Compatibility Fixes 3.3 12/16/2014 Localization for: French, German, Spanish, Italian, Japanese, Chinese (simplified), Chinese (traditional), and Korean
TestFlight SDK integration
Updated Screenshots 3.2 10/29/2013 iOS 7 Support! 3.1 10/18/2013 - Fixed infinite audio loop
- Added bluetooth microphone support
- Simplified interface 3.0 09/18/2013 iAd integration is removed
Flurry Analytics are integrated 2.1 11/06/2012 Fixed sensitivity issue 2.01 10/10/2012 Added button which allows user to silence the whistle
Added switch which allows user to disable the "blow to play" feature
Fixed sensitivity bar so it is now logical
Added iOS 6 compatibility 2.0 09/30/2012 -Bug fixes 1.01 02/18/2012 1.0 02/09/2012