Recording phone calls is a bit of a grey area. We strongly advise against recording a phone call without permission. If you are recording a phone call, always let the person on the other end of the line know that you are doing so. You wouldn’t record a video without permission, and the same basic principles apply to record phone calls. There are several cases, such as telephonic interviews, when recording a phone call can be very useful. It could even be to record a recipe that someone narrates over the phone or a set of instructions that you know you’ll forget. As long as the other person is fine with you recording the call, you’re good to go.
Download Audio Hijack on the Mac. Open Audio Hijack and press Cmd + N or click Session in the top bar and select New Session. This will ask you to select a session template. Double-click Application Audio. On the left side, you will see three blocks — Application, Recorder, and Output. Click the Application block and select FaceTime from the drop-down under Source. Now when you make or receive a phone call from your Mac, just hit the big record button in Audio Hijack. It’s on the bottom left of the app window. When you’re done recording hit the record button again to stop. You can access the recorded file by clicking Recordings on the bottom-right of the app window.