CastSound - Speaker, Mic & Cam

New: use your phone camera as a webcam for your Mac or Linux PC! Wireless speaker + microphone + camera in one app.

CastSound — the wireless speaker, microphone and webcam app that connects your iPhone to your Mac or Linux PC. Stream audio and camera between your iPhone and computer with ultra-low latency, no cable, no Bluetooth pairing.

WIRELESS SPEAKER FOR MAC & LINUX Stream any audio from your Mac or Linux PC to your iPhone over WiFi: music, movies, games, browser tabs, system sounds — if your computer plays it, your iPhone plays it. Walk around your home, garden or office while your desktop audio follows you.

WIRELESS MICROPHONE Use your iPhone as a crystal-clear microphone for your Mac or Linux machine — perfect for video calls, meetings, Discord and gaming. Your voice streams to your computer in real time with echo cancellation.

IPHONE AS WEBCAM — NEW Turn your iPhone camera into a high-quality wireless webcam for your Mac or Linux PC. Works with Zoom, Google Meet, Teams, OBS and any app that sees a camera. One tap starts video right alongside your audio.

Why CastSound? • Ultra-low latency audio streaming — down to 10ms over USB tethering • Speaker, microphone and webcam work at the same time on one connection • Automatic discovery of your Mac or Linux PC on your WiFi network • Background playback: use other apps while listening to your computer • Volume, mute and mic gain control right from your iPhone

Everyday uses: • Pair your iPhone with a Mac mini or Linux media box as a portable speaker • Listen to music from your Mac anywhere in the house — just grab your iPhone and go • Watch movies in bed with your iPhone's headphones while the video plays on your computer • Replace a broken Mac or laptop microphone with the iPhone you already own • Keep gaming audio streaming from your Linux PC to your iPhone while you move to the couch • Let the kids listen to their shows on their iPhone while you keep working

Choose WiFi for freedom around the house, or USB tethering for the lowest latency when gaming or on calls.

Download CastSound now — the modern way to stream audio, microphone and camera between your iPhone and your Mac or Linux computer.