# Privacy Policy

## Trail Sense

Last Updated January 1, 2020

This is the Privacy Policy of Trail Sense. Trail Sense is an Android app which uses your phone's sensors to assist with wilderness treks or survival situations. This Privacy Policy describes all the sensitive data in which Trail Sense uses (does not collect or share), including, but not limited to location and background location.

Location information gathered by this application does not leave your device (as a matter of fact, this app doesn't use the Internet at all). The altitude and pressure history for the last 48 hours is stored in local app storage - this is used to determine weather forecasts. The last known location is also stored in app preferences to allow faster load times and support app functionality when the GPS can not be reached. The beacons store their location in a local SQLite database. All of this information is cleared when you clear the app storage or delete it.

### Data collection / storage

Trail Sense does not collect or share any user information outside of the app itself. All data stored by Trail Sense is done locally on your device.

### Data retention

All data (which is stored on your device) is cleared when you clear the cache/storage of the application.

### Location and background location

Trail Sense uses location data for navigation, barometer calibration, and astronomy calculations.

48 hours of altitude history: When background location is enabled and the monitor weather setting is on. This is used for sea level calibration of barometer data.

Your last location: This is used as a cache for your location when you either don't have a GPS signal or when the GPS fix is taking too long.

Beacon information: The coordinates and other information for the beacons you create are stored on your device, so you can navigate to them in the future.

### Permissions

- Location: Used for beacon navigation, True North, barometer altitude correction (in background), and sun/moon rise/set times
- Background Location: Used for barometer altitude correction and sunset alerts.
- Flashlight: Used for the flashlight/SOS feature - available on the navigation tab.