First of all, you should understand that updates for your app are vital if you want to save the same level of user engagement and protect their personal data at a proper level. Usually, updates begin with a revision of the program code and the search for bugs in it that were not discovered before the release of its first version. It is also critically important to process feedback from real users if any arise. And, of course, you can expand the functionality of your application, enriching it with new features, as well as improve its user interface and performance.