Note from our iOgrapher inventor, Dave Basulto on mics:

If  you are interested in getting great audio from the shotgun microphone make sure you also get an audio cable. This is a necessity to making it work. If you are looking to use handheld microphones, wireless kits, or other XLR shotgun mics you will need an XLR cable, and either the iRig Pre or the Sennheiser XLR input. Our iOgrapher choices for mobile media case mics.

RØDE i-XLR digital XLR interface for Apple iOS devices
Free Gift
RODE VIDEO MICRO
Free Gift
RODE Video Mic Go
Free Gift
RODE SC7 TRS to TRRS Patch Cable
Free Gift
RODE SC4 TRS to TRRS Adaptor for iPhone or iPad
Free Gift
iRig Mic Lav
Free Gift
iRig Mic HD
Free Gift
iRig Voice
Free Gift
6ft Premier Series XLR Male to XLR Female 16AWG Cable
Free Gift
RODE SC6 2 Line Input/Output Breakout Box
Free Gift
Sennheiser E835 Dynamic Cardioid Microphone
Free Gift
iRig Pre
Free Gift