Need help with making an app

I need to make a project that would be a simple app for controlling a drone for Android. I wanted to ask for any tips that would help with this, and also ask a question.
A friend of mine said that I can only control a drone if I know the information from the chip (like physical one) and use right SDK. But I bought a cheap drone specifically for test purposes, and it doesn’t have any official SDK.
Would it still be possible to create an app that would help me control it?
The drone is E99 facegle, which is kinda popular as a cheap beginers one, so maybe there is a chance?
As for the app itself, I just need to create the most basic one, pretty much two joysticks that control the movement.
Any feedback/help would be appreciated!