Open Data Kit (ODK) is a powerful tool to collect and report data

Open Data Kit (ODK) is a free and open-source set of tools which help organizations author, field, and manage mobile data collection solutions. ODK provides an out-of-the-box solution for users to: Build a data collection form or survey (XLSForm is recommended for larger forms); Collect the 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.

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