Compare CastSound with AudioRelay and SoundWire
WO Mic alternative for Mac and Linux
Looking for a WO Mic alternative? CastSound turns your phone into a wireless microphone, speaker, and webcam for Mac and Linux without complicated driver setups.
WO Mic is widely used to turn smartphones into PC microphones, but it relies on legacy virtual drivers that are difficult to install on modern macOS, shows frequent mobile ads, and only handles microphone input. CastSound is a clean, modern alternative that delivers microphone input, speaker output, and webcam video together with zero third-party drivers.
| Feature | CastSound | WO Mic |
|---|---|---|
| Platforms | ||
| macOS app | ✓ | — |
| Linux app | ✓ | ✓ |
| Windows app | Not yet | ✓ |
| Android app | ✓ | ✓ |
| iPhone and iPad app | ✓ | ✓ |
| What you can do | ||
| Listen to computer audio on your phone | ✓ | — |
| Use your phone as a computer microphone | ✓ | ✓ |
| Use your phone camera as a computer webcam | ✓ | — |
| Simultaneous speaker, mic & webcam | ✓ | — |
| Connect over USB | ✓ | ✓ |
| Use several devices at once | — | — |
| Distribution | ||
| Free option | ✓ | ✓ |
| Open source | — | — |
Key Differences
Three Jobs Instead of One
WO Mic only turns your phone into a microphone. CastSound lets you hear your computer, speak through your phone, and be seen on camera simultaneously.
No Driver Hassle on Mac
Modern macOS restricts third-party kernel audio drivers. CastSound works out of the box with native CoreAudio support.
Modern Linux PipeWire Support
CastSound connects seamlessly to PipeWire and PulseAudio, avoiding the manual daemon setup and script requirements of WO Mic.
Clean, Private Experience
Stream directly on your local network or USB tether without ads, and start streaming immediately without mandatory account registration.
Summary Verdict
Choose CastSound if you need a reliable microphone, speaker, and camera on Mac or Linux without driver headaches. Choose WO Mic if you only need a basic microphone on Windows.