ODK allows users to create customized data collection forms using ODK Build or XLSForm. These forms can include various types of questions, from multiple-choice to open-ended, and can incorporate complex logic and validation rules. Once designed, the forms can be deployed on mobile devices through the ODK Collect app. Data collectors can then fill out these forms offline, which is particularly useful in areas with limited internet connectivity. The collected data is later uploaded to a central server, such as ODK Aggregate, for storage and analysis.
