Recording Voice Memos On Your Mac (#1763) The new Voice Memos app in macOS Mojave allows you to quickly and easily record voice memos and any audio from your Mac’s microphone. It keeps a small library of voice memos and lets you go back and append to them, trim them, and edit them. They sync over iCloud with the Voice Memos app on your iPhone and iPad so it is easy to record on one and edit and listen on the other. You can also export the memos as standard audio files.