APK to AAB Converter is a free Android app developed by Shapun S Poonja. It is a utility tool that enables users to convert APK files into AAB files easily. The app has a user-friendly interface with a material design that makes it easy to use.

One of the features of the app is the night theme, which enables users to switch between light and dark modes. Another feature is the custom export path, which allows users to choose the location where the converted files will be saved. The app has a Material UI, which makes the interface look clean and modern.

Overall, APK to AAB Converter is a useful tool for developers who want to convert their APK files into AAB files without any hassle.