Census 2021-Houselist is a free Android app developed by the Office of The Registrar General India for pre-testing houselisting and housing census. Its main purpose is to help users prepare for the upcoming census to be conducted from April 2020 to September 2020.

The app is designed to provide a comprehensive experience for users, with a user-friendly interface that is easy to navigate. The app is specifically developed for pre-testing purposes, allowing users to provide feedback on the app's functionality and usability.

With Census 2021-Houselist, users can easily create a list of households and their members, update their personal information, and even report any inaccuracies or errors found during the pre-test. The app is a great tool for users to familiarize themselves with the upcoming census, and to ensure that they are prepared for the actual survey.