GridWalker SAR

Charles Eakins

About this app

GridWalker SAR is an open-source mapping and navigation tool built specifically for Search and Rescue (SAR) professionals and volunteers. Designed to streamline tactical ground operations, this app helps field teams visualize search grids, maintain accurate orientation, and ensure thorough coverage of assigned search areas.

Whether you are clearing a 1-km tactical block or conducting a highly detailed 100-meter sweep, GridWalker SAR provides the visual references you need to stay on track and coordinate effectively.

Upcoming Features & Roadmap
GridWalker SAR is in active development, built by and for the people who need it. Future updates will introduce advanced tools for remote and complex operations, including:

Ad-Hoc Wi-Fi Direct Mesh Support: Keep your team connected and sync grid coverage data completely off-grid, even when cellular service drops in remote wilderness areas.

Missing Persons Database Overlay: Seamlessly integrate with missing persons databases to pull critical subject information and last-known locations directly into your active operational map.

Support Continued Development
GridWalker SAR is proudly open-source and free to use. If this app helps your team in the field and you would like to support the countless hours going into its continued development and future features, consider leaving a tip:
https://ko-fi.com/ceakins

What’s new

Compatibility update for Android 16.

GridWalker now targets Android 16 (API 36), keeping the app current with
Google Play requirements and ready for the latest devices.

No changes to search grid tracking, offline maps, markers, or data
export — this release is compatibility only.