GPSSample (https://play.google.com/store/apps/detailsid=edu.gtri.gpssample) is a free mobile Android application designed to facilitate rapid, statistically valid sampling by allowing teams to create on-the-fly household listings as a sampling frame while in the field and conduct sample elections from this listing, all without needing to be online.

GPSSample provides navigation support so teams can successfully return to sampled households for survey data collection.

This application offers a rapidly deployable, efficient, and scalable solution for high-quality survey sampling applicable to emergency response teams in humanitarian disaster settings, Ministries of Health, coverage surveys, outbreak investigations, and many other use cases. 

GPSSample provides timely access to high-quality assessment data to support informed decision making.

See website at: https://www.gpssample.org/