# kylecorry31/Trail-Sense

An Android app that uses your phone's sensors to assist with wilderness treks or survival situations.

Repository: https://github.com/kylecorry31/Trail-Sense
Canonical: https://ross.abutalabs.com/products/trail-sense
Homepage: https://kylecorry.com/Trail-Sense/
Language: Kotlin
License: MIT
License Family: permissive
Topics: android, barometer, altimeter, compass, gps, sensors, survival, wilderness, hiking, weather-forecasting, navigation, weather, camping, backpacking, astronomy, kotlin, offline, maps, privacy, map
Last push: 2026-08-26T22:13:38+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 2515, "days_push": 7, "days_rel": 36, "gap_med": 32, "n_releases_24m": 24}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2830, forks 174 (observed 2026-08-28T04:07:24.291394+00:00)

## What it is
Trail Sense is an open-source Android app that uses phone sensors (barometer, GPS, compass) to assist with hiking, backpacking, camping, and survival situations. It works entirely offline, offering navigation, weather forecasting, astronomy, and utility tools without any internet access.

## Use cases
- navigate offline while hiking without cell service
- get hyperlocal weather forecasts from barometric pressure
- trace back my steps with backtrack GPS
- use a photo as an offline map
- find sun and moon positions for camping
- measure slope angle with a clinometer
- keep my location data private with no internet app

## When to choose
- you need a fully offline, privacy-respecting navigation and weather tool for wilderness trips
- you want an open-source alternative to proprietary hiking apps
- you hike, backpack, camp, or geocache and want sensor-based tools like altimeter, compass, and flashlight in one app

## When to avoid
- you need turn-by-turn road navigation or driving directions
- you require guaranteed-accurate safety-critical readings - the app explicitly disclaims reliability and advises backup gear
- you need an iOS or desktop application

## Facets
- artifact type: application
- maturity: active
- function: geospatial, analytics, monitoring
- domain: weather, privacy, android-tools
- platform: -
- tags: offline-first, hiking, survival, navigation, barometer, compass, astronomy, backpacking, kotlin, sensors, maps, real-time, android, mobile

## Member repositories
- kylecorry31/Trail-Sense (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:24.291394+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:38:10.506327+00:00, confidence not recorded.
  - readme: https://github.com/kylecorry31/Trail-Sense (fetched 2026-08-28T04:07:24.291394+00:00, sha 1dea761aa7d4)
  - homepage: https://kylecorry.com/Trail-Sense/ (fetched 2026-08-29T09:53:18.020308+00:00, sha b4cad216aba8)
- Data as of 2026-08-30T08:39:29.467469+00:00.