Everything in this software is completely HUMAN .
(Automation sends device input actions (touch/tap/swipe) directly to the android phone (as if they are sent by the real touchscreen).
Just like how your (real human) touch/tap/swipe on the real touchscreen sends the input actions to the Android app.
So, for the app, both are exactly the same.
It is as safe as if you hire some person to do the exact same Actions.