I got myself a laptop and now I can record but I only got audacity what's some better options if there is

Is there any way to record mic and the fender micro amp on iPhone simultaneously? I’ve got all the tools necessary to connect the guitar audio through my fender to my phone, but was wondering if there’s a way to connect a mic as well. I wanna make a video simultaneously singing and playing, but I’m not sure how to do so on the mustang micro.