I don't like the screen size. Right now I'm using a 10.5" iPad pro but it seems to lag. I have to close the app and open it at times to make it a little better. I believe it came out in 2017. on a side note: the local fishermen love my drone work...
Samsung has it's own app store, separate from the Google Play store. The screenshot shows some language written in Chinese: "飞行教学" — which translates to "Flight tutorial" or "Flight training" in English.
The app vendor name, "Shenzhen DJI...