u/Heen-En-Weer-Wolf

Hi! In two weeks I will be making my first (no budget) short documentary. I will record part of my audio on a lav mic that is plugged into my phone. Is there an app that allows me to listen 'live' to the audio being recorded, for example via my airpods? Some of the recording will be outside, so I would quite like to keep checking if the sound is still okay.

Does such a thing even exist? Or are there other ways to achieve this effect? Your expertise is (already!) greatly appreciated.