Trail Sense

4.6
1.02K reviews
100K+
Downloads
Content rating
Everyone
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About this app

Explore beyond the reaches of the Internet with Trail Sense.

- Designed for hiking, backpacking, camping, and geocaching
- Place beacons and navigate to them
- Use as a compass (only available on devices with a compass sensor)
- Follow paths
- Retrace your steps with backtrack
- Use a photo as a map
- Plan what to pack
- Be alerted before the sun sets
- Predict the weather (only available on devices with a barometer sensor)
- Use your phone as a flashlight
- And much more!

Trail Sense is a tool, and just like any other tool that you bring into the wilderness, it's essential to have backup equipment and skills. This app is intended for information purposes only and the accuracy of the predictions and sensors are determined by a number of factors, including calibration, sensor quality, external sources, etc. Use at your own risk, always have backup tools (ex. compass), and stay safe.

This app also does not, and will never, use the Internet - all information in Trail Sense comes directly from your phone's sensors, and no data will leave Trail Sense.

COMMON ISSUES
- No compass: If your phone does not have a compass sensor, there is nothing I can do to make it work because that is hardware. You will still be able to use other features of Trail Sense.
- No weather: The Weather tool is only available if your phone has a barometer sensor.

Found an issue or want a new feature? Contact me at trailsense@protonmail.com or create a new issue on GitHub: github.com/kylecorry31/Trail-Sense

I'm the only developer of Trail Sense, so I will do my best to help out with issues - but I have a limited device selection to test on.

PERMISSIONS
- Notifications: Allows Trail Sense to display notifications (backtrack, weather, sunset alerts, astronomy events, water boil timer, etc)
- Location: Allows Trail Sense to retrieve your location for navigation, weather (sea level calibration), and astronomy.
- Background location: Allows Trail Sense to retrieve your location for sunset alerts while in the background. On some devices, this will also improve the reliability of backtrack and weather monitor.
- Physical activity: Allows Trail Sense to use your phone's pedometer for distance calculation.
- Camera: Allows Trail Sense to use your camera on the sighting compass, clinometer, and for taking photos used by the Cloud Scanner, QR Code Scanner, and Photo Maps.
- Alarms & reminders: Allows Trail Sense to post a notification at an exact time. This is used by the Clock tool (when updating system time) and Sunset Alerts.

LINKS
Privacy policy: https://kylecorry.com/Trail-Sense/#privacy
FAQ: https://github.com/kylecorry31/Trail-Sense#faq
Trail Sense is available under the MIT License: https://opensource.org/license/mit/
Updated on
Aug 23, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.6
1K reviews
Wolf VanZandt
April 7, 2023
An excellent app for hikers, campers, and adventurers. My android phone is my primary computer and I use it for lifelong learning in the field. Trail Sense pulls everything the phone has that can be used for outdoor recreation and survival to the surface so you can easily use it. And it all works! Note: if your phone case has a bunch of magnets in it, take the phone out to use anything that draws data from the magnetometer...compass, metal detector, sensor suite, etc
52 people found this review helpful
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Trail Sense
April 25, 2023
Thank you for the review!
Evan Beebe
July 30, 2022
Absolutely the best made, fit and finish, useful, ad free app I have had in my life. While I don't often say this, it's functionality should be rewarded and there could be a pro version (or donation link) that I would gladly pay for. While the monetization of such a great app is usually frowned upon, I believe most users would pay to help you as you have helped us. Thank you for making an app that is as fun to use as it is helpful, without needing wifi or stupid ads. Cheers!
9 people found this review helpful
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Trail Sense
July 31, 2022
Thank you, I really appreciate it! I don't think I will create a pro version (I don't want anyone to have to pay to unlock features), but I do accept donations through the project's GitHub page (multiple options: https://github.com/kylecorry31/Trail-Sense#support)
Matt Davis
December 26, 2022
I downloaded 'Trail Sense' after seeing it recommended by "Android Police". It does exactly what it says in the description. All the features work very well. It's especially impressive when you realize it has no Internet connectivity; it's just using your device sensors and whatever almanac was programmed into it. If the Dev ever decides to make a "Gold" version that's identical in every respects to this one, except for a spiffier icon, I'd gladly drop a couple bucks just to say thanks.
27 people found this review helpful
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Trail Sense
December 26, 2022
Thank you!

What’s new

Map tool (new)
- View all beacons, paths, photo maps, etc. on a map
- Basemap layer (color based on satellite imagery)

Map layers
- Add contour layer
- Map layer settings on Navigation, Photo Maps, and Map tools

Photo Maps
- Auto calibrate more PDFs (ex. USGS GeoPDF)
- Improve PDF rendering

Augmented Reality
- See visible planets and meteor showers at night
- Improve focus when pointed at the sky

Survival Guide
- Content updates