Exporting audio stems

So I just started using N track for IOS and I love it! Although I’m having a hard time sending stems of my vocal recording to my engineer for mixing . Any tips on how I’d be able to do that?

You can export stems by bouncing tracks: long press on the track left section to show the track’s properties box, then select Bounce -> Start.
After you have bounced a track that you want to export, long press on the bounced waveform -> select Open In -> Files and save to a folder. You can then send the files in the folder you’ve exported to to your engineer.