How to use different keyboards in different apps without paid software?

You can try Macrodroid

Steps :-

1. Download, install and launch


2. Go to Marcos


3. Add new Marco


4. In trigger select the app launched and select the terminal app


5. In actions select Keyboard switch(i guess this would cause the keyboard list popup so you will need to tap once on hakers keyboard)


6. Repeat same for App closed trigger (add both trigger in same macro)

Hope it gets the job done

Do report back

Update:

Try putting constraints of app running or app in foreground on app closed action

And app not running or not in foregroung on app launched action

I would also suggest to try to keeping 2 different macros for launching and closing and also it should work without legacy support