those coders creativity Lie's only on creating apps?

Answer 1

considering all programs as
apps then yes

else if you are considering gui only
then they also write scripts

else please elaborate your question
some more

Answer 2

okay I get that.
thanks

but like the production of various electronic devices which we use.........
for instance the chargers we use in charging our phone's
I want to kw if corders play a role in creating it...