I've created clips on Fountain.FM app on iPhone before, but hadn't tried to save as mp3. Thanks for suggesting this - I had to try it!!! Just did it. Fountain on iPHone at least will let you create a clip, save it, then you can send it (you choose which app...) I tried via email and Files (iCloud). I was able to receive it as mp3 and play it. It's a number of taps, but it worked well.