Tamil Christian Paamalai is a free Android application developed by Hannah John under the Education & Reference category's Books subcategory. It is a comprehensive song book app that contains 410 songs, just like the physical paamalai book used in churches. The app is designed to be easy to use, just like the physical book. The app allows users to browse songs by their number, just like in a regular church service. Additionally, users can search for songs by their first letter. Recently, new features have been added to the app, such as changing font size and color, and adding favorite songs. The developer encourages users to share the app and provide feedback and suggestions. Overall, Tamil Christian Paamalai is a useful and user-friendly app for those who want to have easy access to a comprehensive song book on their mobile device.