ODK is a suite of free and open-source tools for collecting, managing, and using data in resource-constrained environments. With ODK, you can build a form for offline field data collection in the field with your Android device.
Note: ODK is not a Google product, it is open source software built by the ODK community
Please post any questions about ODK on the ODK Help Forum. The Forum has a very active community and quick response rate. Questions can be technical but they don't have to be. It's totally appropriate to describe a scenario and ask for feedback on different approaches. For example, it can be valuable to talk through how to approach form design at a high level, the workflow from data collection through analysis, how to train data collectors, what server and configurations to use, etc.