Yes sure, so basically we had one internal fitness tracking app and it was developed on Android. It was designed to track users fitness activities including steps, typical calories, bunt and distance covered. These sorts of instances and technology I worked, majority worked in this application as mentioned like Java 14 only to develop new features and implement seamless interoperability. Between the two programming languages, that is one thing I faced. Then I can say migration between the legacy app and new app was challenging. I can recall and maintain the app priority, real-time data synchronization between the app and wearable devices. This is one of kind of challenges I faced.
