macOS · internal audio recorder
One button captures your Mac's own audio — a call, a lecture, a livestream, a three-hour DJ set — and hands you a WAV or an MP3 you can drag straight into anything. No loopback driver to install. No cap on how long you record.
Ready — click to record
No recordings yet
The problem
QuickTime records the microphone. A screen recording hands you a video file you didn't want, with the audio welded into it. The usual fix is installing a virtual audio driver and rewiring your whole sound setup around it — then remembering how you rewired it the next time something goes quiet. AirCheck skips the rewiring entirely: pick a source, press record, get a file.
Both sides of a Zoom, Meet or FaceTime call, recorded from the audio your Mac actually plays.
A two-hour session captured in one file while you take notes in another window.
Anything playing in a browser tab that has no download button next to it.
Three hours off your controller or interface, in one continuous take, at full quality.
Your side and the app's side together, so you can hear the whole exchange back.
Grab audio out of any app that plays it, uncompressed, at the rate it was played.
Origin
A recording a radio broadcaster makes of their own output, kept so they can listen back and hear what the audience heard. Every station kept one. It's a good habit for anything you say, play or sit through — and until now it was strangely hard to do on a Mac.
Signal path
You only touch the first two, and only once.
Your Mac's system output, or any Core Audio input — a USB microphone, an audio interface, a controller's return channel. AirCheck lists every input it can find and remembers the one you used last.
Multi-input interfaces get a channel selector. Feeding inputs 3 and 4 of an 8-in box? Pick Ch 3–4 and record those, not six channels of silence. Or take everything at once.
The button turns into a stop square and starts counting. Nothing on screen asks you for anything again — for a minute or for four hours.
Files land in ~/Music/AirCheck, stamped with the date and time you started — AirCheck 2026-08-21 at 22.14.03.wav. Ready to drag anywhere.
What's inside
A call happens once. So does a set. Most of AirCheck exists so that nothing quietly stops recording halfway through it.
If audio stops flowing — an interface browns out, a driver hiccups — AirCheck notices within two seconds and restarts capture into the same file. You get one continuous recording, not a session that ended at minute nine.
System audio is captured through ScreenCaptureKit, built into macOS. Nothing to install, no virtual device sitting in your sound settings rerouting everything else you do.
No per-file limit, no watermark, no prompt mid-take, no trial clock counting down while you work. The only ceiling is free space on the disk, roughly one gigabyte per hour.
Pick the format once and every recording lands that way. WAV is 16-bit PCM, the format every editor and player on earth accepts. MP3 is 320 kbps, for when a three-hour set needs to fit somewhere. Capture itself is always lossless at your device's native rate — the conversion happens after you press stop, so nothing is thrown away while you record.
Unplug an interface and macOS hands it a brand new ID when it returns. AirCheck tracks yours by name and re-selects it the moment it's back.
Play back and scrub without leaving the window. Rename takes, drag them into folders, drag them out. Deleting moves to the Trash, so nothing is ever really gone.
Specification
| Format | WAV · 16-bit PCM · stereo, or MP3 · 320 kbps |
|---|---|
| Capture | Lossless 24-bit internally, converted when you stop |
| Sample rate | Device native — 48 kHz for system audio |
| Sources | Mac system output, or any Core Audio input |
| Channel selection | Any stereo pair, or all channels at once |
| Recording length | Unlimited — bounded only by disk space |
| Disk use | ≈ 1 GB per hour at 48 kHz |
| Destination | ~/Music/AirCheck |
| Recovery | 2-second stall detection, restarts into the same file |
| Requires | macOS 14 Sonoma or later · Apple silicon |
| Permissions | Microphone for inputs, Screen Recording for system audio |
Pricing
No subscription, no account, no trial clock. If it doesn't do what you need on your Mac, mail me inside fourteen days and I refund it — no questions, no forms.
AirCheck
Everything your Mac plays, in one file.
AirCheck Pro
For mixers, interfaces and long sets.
Fourteen days, full refund, no questions asked.
One button
Install it once, and the next time something worth having comes through your speakers you're one click from a file.
Buy AirCheck — €39 macOS 14+ · Apple silicon · ~4 MB · 14-day refund