Our Apps / iDUMBO
iDUMBO - Hear outside sounds while listening to music with your earphones
iDUMBO is an app that allows you to notice external sounds while enjoying music with headphones or earphones on your iPhone.
When listening to music on your iPhone with earphones or headphones in the office, school, train, or cafe, you may not notice surrounding sounds. In such cases, iDUMBO helps you become aware of the sounds around you.
When using earphones with a built-in microphone, the microphone picks up ambient sounds, mixes them with the music you're listening to, and plays them through your earphones or headphones.


While you won't hear every subtle external sound, you should be able to distinguish voices calling you or chimes ringing.
Functionality varies depending on connected earphones
- Wired earphones with microphone: Collects sound from the earphone's microphone
- Bluetooth headset with microphone: Collects sound from iPhone's built-in microphone

Screenshots
iPhone




iPad




At Work or Home
You'll be able to notice phone calls and when someone calls you, making communication easier.
While Walking
Many users listen to music while walking or running. Hearing surrounding sounds is important for safety.
Unique Music Player
iDUMBO has built-in music player functionality. Playlists and sound quality are the same as the native app - high quality, of course.
Update History
| 2015/02/02 | Ver.1.0.0 | iDumbo Initial Release |
| 2015/07/10 | Ver.1.1.0 | Added Apple Watch support, various bug fixes |
| 2021/02/14 | Ver.1.2.1 | Thank you for waiting. Re-released with support for the latest iOS. Unfortunately, the app is now paid. Official iOS 14 support, Apple Watch support discontinued |
Key Features
- ON/OFF toggle for ambient sound collection
- Volume control for collected sounds
- Search music from your device's Music library
- Player functions (play/next/previous/pause)
- Features other than volume are not linked with the iPhone's standard player app. Please use this app's player functions.
Disclaimer & Notes
- Audio input device (typically microphone input) is required.
- Depending on the earphones/headphones you use and the music you listen to, sufficient effects may not be achieved.
- External sounds are not completely audible. Please use this as a cue to notice sounds.
- We cannot compensate for any damages resulting from using iDUMBO.
- Advanced features such as noise cancellation are not available.
- Do not use with speaker playback.
- Feedback may occur and may adversely affect speakers or your body.
System Requirements
- iOS 14.0 or later
- iPhone, iPad
Menu Languages
- Japanese
- English
* Product specifications may differ from the latest release version.