The CBSE Expression Series is an Android app developed by CBSE Delhi and is available for free. It falls under the category of Education & Reference and is designed for submitting entries to various categories. Once the data has been submitted, it cannot be changed.

The app is intuitive and easy to use. It is perfect for students who want to participate in various competitions and express their creativity. The app allows users to submit their entries to different categories, including essay writing, poetry, and painting. The app is user-friendly and provides clear instructions on how to submit entries. The app also has a feature that allows users to check the status of their submission.

Overall, the CBSE Expression Series is a great app for students who want to participate in various competitions. It is easy to use and provides a platform for students to showcase their creativity. However, it is important to note that once the data has been submitted, it cannot be changed.