Open Data Kit (ODK) is an open-source suite, a set of tools that helps to build survey forms. It can be used to collect data through a mobile device and then the data can be send to a server. We can aggregate the collected data on the server and extract it in a useful format.
Open Data Kit (ODK) is an open-source suite of tools that helps to Build survey form, Collect data on a mobile device and send it to a server and Aggregate the collected data on a server and extract it in useful formats. ODK Aggregate can be deployed on Google's App Engine, by creating google account.