I use wifi OBD II code scanner called ELM327 with my iPhone, there are different apps that goes along with that reader, some of them are free with in app purchases, unfortunately there is not one that is specifically for our FX37, although the closest app is "OBD fusion ", for code diagnostic mode you never try to use it while engine is running! There is a "dashboard" in each app with specific options that you customize to monitor certain parameters such as HP & torque in charts while driving, and these can be useful sometimes! The only reason I say that there is no one that is dedicated to our rides because if you look for BMW's there is an app that you can actually do coding with, I am waiting on developers to come up with an app for us that is useful in that regards.
Sent from my iPhone