No, Crystalsky is a Android only device. The Android OS is unique to the CS, i.e. a different version than the Android software that runs on phones.
If iPad mini supports iOS 12, then when djigo4 supports it so will your mini. Currently I have no plans to move to iOS 12 anytime soon. Not sure if Djigo4 has updated for iOS 12 yet. But if it hasn't it will soon.
Paul C