
Short answer: GarageBand does not have a built-in button to reverse an audio recording. A lot of tutorials dance around this, so here is the honest version, and the quickest workaround.
Unlike Logic Pro or Audacity, GarageBand has no Reverse effect or function for audio regions. There is no menu item that flips a recording backwards. So the trick is to reverse the clip somewhere else, then bring the reversed file into GarageBand like any other audio.
Since GarageBand runs on iPhone and Mac, the quickest workaround is to reverse the clip on your phone and import it. Reverse Audio reverses a recording or file in one tap and exports it, ready for GarageBand. For the steps, see how to reverse audio on your phone, or compare with reversing in Audacity.
Reverse in one tap, export, and import into GarageBand. On iOS and Android.
Not directly. GarageBand has no built-in reverse effect or function for audio regions. You reverse the clip in another tool, then import the reversed file.
Reverse it on your phone with Reverse Audio in one tap, export the file, and drag it onto a GarageBand track. Audacity works too on a computer.
Yes. The workaround is the same on both: reverse the clip elsewhere, then import the reversed file into GarageBand.