Calculator Light Theme is a free personalization app developed by Xlythe Calculator for Android 9.0 users. As the name suggests, it is a refreshing take on the default calculator theme, making everything light with a dash of color. The app is open-sourced, and users can access the code on GitHub.

The interface is simple, clean, and easy to navigate. The app's theme is a welcome change from the traditional dark themes, making it easy on the eyes. The app's functionality is no different from the default calculator app, but the color scheme is a nice touch that adds some personality.

Overall, Calculator Light Theme is a great app for those who want a fresh and light take on the default calculator theme. It's open-sourced, easy to use, and does not require any special permissions.