Your phone as complete PC peripherals
Compare CastSound with AudioRelay and SoundWire
Compare CastSound with AudioRelay, SoundWire, WO Mic, and SonoBus for using your phone as a speaker, microphone, and webcam on Mac and Linux.
CastSound is built for one everyday job: hear your computer through your phone, speak back, and show video in one connection. The free tier works without an account; CastSound Pro (subscription or Lifetime) unlocks unlimited streaming. Other products may be a better fit when you need Windows support today, Android-only playback, or group sessions for musicians.
AudioRelay alternative for Mac and Linux
Looking for an AudioRelay alternative on macOS or Linux? CastSound offers low-latency computer audio streaming, phone microphone input, and webcam in one app.
Read full comparisonWO 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.
Read full comparisonCastSound compared, feature by feature
| Feature | CastSound | AudioRelay | SoundWire | WO Mic | SonoBus |
|---|---|---|---|---|---|
| Platforms | |||||
| macOS app | โ | โ | โ | โ | โ |
| Linux app | โ | โ | โ | โ | โ |
| Windows app | Not yet | โ | โ | โ | โ |
| Android app | โ | โ | โ | โ | โ |
| iPhone and iPad app | โ | โ | โ | โ | โ |
| What you can do | |||||
| Listen to computer audio on your phone | โ | โ | โ | โ | โ |
| Use your phone as a computer microphone | โ | โ | โ | โ | โ |
| Use your phone camera as a computer webcam | โ | โ | โ | โ | โ |
| Simultaneous speaker, mic & webcam | โ | โ | โ | โ | โ |
| Connect over USB | โ | โ | โ | โ | โ |
| Use several devices at once | โ | โ | โ | โ | โ |
| Distribution | |||||
| Free option | โ | โ | โ | โ | โ |
| Open source | โ | โ | โ | โ | โ |
Comparison reviewed 13 September 2026. Product capabilities can change; verify current details with each publisher.
Publisher sources: AudioRelay, SoundWire, WO Mic, and SonoBus.