You can share a link to a voice memo that let’s someone listen to it and reply.

1.) Record a voice memo (Mic button on home)

2.) Tap “Share Voice Memo”

3.) Copy Link

https://www.youtube.com/watch?v=rk3YgSnx4vU&list=PLM_p2mhoTkcApu2QYJODXJK8w9-PUiCVh&index=2