I tuned aurally for 10 years. Over the last 3 years, I have used a hybrid method of a tuning app and aurally. I use the app to aid in setting the temperament and my ear as the final judge. I primarily use the app in the center octave aka temperament octave, but use my ear for the rest.
I find it’s easier to be absolutely 100% consistent to A440 with this method, not to mention quicker.