ODK Collect is an Android app for filling out forms. It's been used to collect millions of data points in challenging environments around the world. Contribute and make the world a better place! 📋


ODK Collect

Platform License Build status Slack status

ODK Collect is an Android app for filling out forms. It is designed to be used in resource-constrained environments with challenges such as unreliable connectivity or power infrastructure. ODK Collect is part of Open Data Kit (ODK), a free and open-source set of tools which help organizations author, field, and manage mobile data collection solutions. Learn more about the Open Data Kit project and its history here and read about example ODK deployments here.

ODK Collect renders forms that are compliant with the ODK XForms standard, a subset of the XForms 1.1 standard with some extensions. The form parsing is done by the JavaRosa library which Collect includes as a jar.

Setting up your development environment

  1. Download and install Android Studio

  2. Fork the collect project (why and how to fork)

  3. Clone your fork of the project locally. At the command line:

    git clone https://github.com/YOUR-GITHUB-USERNAME/collect

    If you prefer not to use the command line, you can use Android Studio to create a new project from version control using https://github.com/YOUR-GITHUB-USERNAME/collect.

  4. Open the project in the folder of your clone from Android Studio. To run the project, click on the green arrow at the top of the screen. The emulator is very slow so we generally recommend using a physical device when possible.

Contributing code

Any and all contributions to the project are welcome. ODK Collect is used across the world primarily by organizations with a social purpose so you can have real impact!

Issues tagged as quick win should be a good place to start. There are also currently many issues tagged as needs reproduction which need someone to try to reproduce them with the current version of ODK Collect and comment on the issue with their findings.

If you're ready to contribute code, see the contribution guide.

Contributing in other ways

If you know a language other than English, consider contributing translations through Transifex.

You can also help by improving this documentation.

Downloading builds

Per-commit debug builds can be found on CircleCI. Login with your GitHub account, click the build you'd like, then find the APK in the Artifacts tab.

Current and previous production builds can be found on the ODK website.


Android Studio Error: SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.

When cloning the project from Android Studio, click "No" when prompted to open the build.gradle file and then open project.