1 - Yes but there is a known issue for iOS: Known Issues with current release versions
2 - iOS and Android are different platforms, therefore different licenses and purchases
3 - We do not have a grid/mapping tool yet so such missions require manual planning for now. We don’t have a release date to share yet for such tool.
Can driving information be known in real time while the drone is automatically operated using the program?(Flight speed, current flight altitude, remaining battery…): Yes
Lastly, if the battery is low during automatic driving, does it calculate the remaining distance and stop the mission on its own and return to the base? Yes if Smart RTH is enabled this is a feature of the DJI firmware