Using GPS this application will trace your path as you traverse a perimeter and then tell you the area of the surface that you've surrounded.

This application is designed to be integrating with forms built on CommCareHQ for the CommCareODK mobile platform. Following the simple steps outlined on our website, you can call out to this application from your custom forms and use the resulting data in your surveys.

This app is open source! Github:
https://github.com/dimagi/area-mapper/