You have made it! Your app is in the App Store and you know that at least your friends are downloading and installing it on their device. But it is not the end of the life of your app. It is just the beginning. It has just made it through the first cycle from a faint idea in your mind, through development and testing to final deployment.
Some time will pass and you will start realizing that there are things in your app that could have been done better. There are some bugs to be fixed, ways to make it faster, and ideas of how to improve user experience and add new functionality.
One important saying fact that better is the enemy of good. Why change things that are working? But the change is inevitable. The only thing that never changes is the change itself. You might be a one person app development company or part of a bigger team. Regardless of the number of...