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kylecorry31/Trail-Sense

An offline Android app that uses phone sensors like the barometer, compass and GPS to help with hiking, camping and survival navigation.

Open-source alternative to:Gaia GPSAllTrails

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What is it?

Trail Sense is an Android app for people heading into the wilderness. It turns the phone's built-in sensors, such as GPS, compass, barometer, altimeter, camera and pedometer, into tools for navigation, weather prediction and astronomy.

The app is designed to work entirely offline and does not use the Internet. Location data stays on the device: beacons and paths are kept in a local SQLite database, and a 48-hour altitude and pressure history is used to produce weather forecasts. Clearing app storage removes all of this data.

Features include placing beacons and navigating back to them, following and retracing paths with backtrack, using a photo as a map, planning packing lists, sunset alerts, a flashlight and a user guide built into the app.

Key features

  • 01Place beacons and navigate to them offline
  • 02Follow paths and retrace your steps with backtrack
  • 03Use a photo as a map
  • 04Predict weather from local barometric pressure history
  • 05Get alerts before sunset and sunrise
  • 06Plan what to pack for a trip

Use cases

  • Navigating a backcountry route without cell service
  • Retracing your path back to camp in poor visibility
  • Estimating weather changes while on a multi-day trek
  • Using a phone as a backup compass and flashlight in a survival situation

Topics

#android#hiking#navigation#offline#sensors#weather-forecasting#camping#kotlin#altimeter#astronomy

FAQ

What is Trail-Sense?
An offline Android app that uses phone sensors like the barometer, compass and GPS to help with hiking, camping and survival navigation. Trail Sense is an Android app for people heading into the wilderness. It turns the phone's built-in sensors, such as GPS, compass, barometer, altimeter, camera and pedometer, into tools for navigation, weather prediction and astronomy.
Is Trail-Sense free to use? What license does it have?
Trail-Sense is open source under the MIT license. Check the license terms before using it in commercial products.
Is Trail-Sense still maintained?
Actively maintained. The last commit to Trail-Sense was on Oct 21, 2026.
What can I use Trail-Sense for?
Navigating a backcountry route without cell service Retracing your path back to camp in poor visibility Estimating weather changes while on a multi-day trek Using a phone as a backup compass and flashlight in a survival situation
Where can I get Trail-Sense?
The source code and installation instructions are on GitHub: https://github.com/kylecorry31/Trail-Sense

Summary generated by AI from the project's README. GitHub stats refresh daily.

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