LINETHRU.
ROUTE ANY INPUT — OR ANY APP — TO ANY OUTPUT. MONITOR IT LIKE HARDWARE.
LIVE INTERACTIVE REPLICA — DRAG THE KNOBS. THE REAL APP IS 1:1.
Free to try — monitor 60 seconds at a time, no account needed. Buy a serial when it clicks.
HOW IT WORKS
DOWNLOAD & TRY
Grab the app and route audio right away. Monitoring runs 60 seconds at a time, free — as many sessions as you like, no account needed.
BUY A SERIAL
When it earns a spot in your setup, buy a serial for $25. It lands in your inbox in seconds, with a download link.
PASTE IT IN
Enter the serial in LineThru's license panel and the countdown is gone. Monitor as long as you like, on this Mac.
FEATURES
ROUTE
Pick an input and an output. A synth, a turntable, a handheld — any line input straight to any output. One signal path, zero ceremony.
APP ROUTING
Send one app's audio — a browser, a music player, a game — to its own output while every other app stays on your normal device. The routed app is muted at the source, so you never hear it twice.
LOW LATENCY
Pick your latency in Settings — down to 2.7 ms buffers for playing instruments live. A single realtime audio path with hardware drift compensation keeps every mode glitch-free.
LEVELS
Input trim, monitor level, and balance on hardware-style knobs. Double-click resets. Hold Option for fine control.
METERS
Stereo LED meters with fast attack, peak hold, and smooth release — plus a clip marker showing where positive trim would clip, before it happens.
MENU BAR
A status item keeps monitoring state and controls one click away while the window stays out of your way.