In either CTRL+DJI or Pix4DCapture, it would be great to have a "Format SD Card" feature. Right now, the only way to do this (on Android) is to run DJI Go, format the SD card, then Force Quit DJI Go, then start CTRL+DJI and then Pix4DCapture. On iOS, the process is the same except there is no CTRL+DJI step. But either way, you have to run (and terminate) multiple apps.
Feature request: Format SD Card