eRaktKosh is a free Android application developed by CDAC Noida that allows users to search for blood banks across India. The app displays blood banks based on the user's current location in ascending order of distance. Additionally, users can also search for blood banks by selecting a particular State or District. This app provides details about the blood bank, such as contact information, address, and distance from the user's location.

The eRaktKosh app enables users to call or send an email to the selected blood bank and get navigation directions. This feature is especially useful in case of emergencies where time is of the essence. The app has an intuitive user interface and is easy to navigate. It is a useful tool for anyone in need of blood or looking to donate blood.