+1.

For OP:

Publishing something opens the door for receiving feedback. The feedback may be positive or negative. Also a single piece of feedback is typically describing only one individual's opinion (this one even begins with the constructive argumentation magic words "In my opinion").

Try to view the feedback you receive in a positive way. Someone is actually interested enough on your app to comment on it. That is not a given. Even if the general tone of feedback was negative, it has still has something to give: you will learn what someone else thinks.

Whatever you do in your life, you will certainly encounter critique. Everyone does. Learning to manage the emotions it creates in you will be an useful skill. When all else fails, you can always fall back to "it's easier to talk about things than actually do them".