Is there a way to reach my customers?

Hi, this is my first post in the Forum. Sorry if I break any rule.

I want to know if there is a way to reach my customers to get feedback about the features of my app?

Unless the customers contact you first, you can’t reach them by any mean. You can however include a Readme.txt file in your downoad file that requests feedback from the customers but it’s not guaranteed that they will do so.