Compass & Altimeter: Hike, GPS

Compass is a complete pocket navigator for hiking, backpacking and the outdoors: true-north heading, barometric altimeter, sun and moon times, and an offline GPX route tracker with embedded map. Works without signal, reliable direction at a glance, wherever you are.

COMPASS AND HEADING
- Tilt-compensated true-north or magnetic-north readout
- Automatic magnetic declination based on your GPS location
- Bearing lock, mark a heading and the arrow stays on target while you walk
- Live latitude and longitude, copy or share with one tap

ALTIMETER AND ALTITUDE
- Real-time altitude from the barometric sensor
- Automatic GPS calibration when you are stationary
- Manual calibration to a known elevation (trail-head sign, summit marker)
- Sparkline graph of altitude over time
- Air-pressure readout in hPa

SUN AND MOON
- Sunrise, sunset, moonrise and moonset for your current location
- Plan the golden hour, an evening hike, or a night out under the stars

ROUTE TRACKING AND OFFLINE MAP
- Track hikes, runs and sailing trips in the background
- Distance travelled, elevation gain and loss, duration
- Survives app restarts, never lose a route
- Embedded OpenStreetMap with tile caching for offline use
- GPX export, open your track in any compatible mapping or fitness app

UNITS AND DESIGN
- Switch between metric (m, km) and imperial (ft, mi) any time
- Dark Material 3 interface, edge-to-edge layout
- Available in 32 languages

TYPICAL USES
Hiking and trail running. Backpacking and survival training. Camping. Fishing and hunting. Geocaching and orienteering. Sailing and small-boat navigation. Photography and golden-hour planning. Stargazing. Land surveying. Drone flying. Scouting and outdoor education.

PERMISSIONS
- Location, for GPS coordinates, altitude calibration, sun and moon times, and route tracking
- Notifications, only used to keep the route session running in the background

PRIVACY
No account. No sign-up. No subscription. No in-app purchases. A small banner is served via AdMob, see the Data Safety section for AdMob's third-party disclosures. Made in Switzerland by an independent developer.

Get in touch: nils.roethlisberger@gmx.ch

Popular uses: navigate with a digital compass while hiking, read your coordinates and share them, record your route on the offline hiking map, watch your altitude with the altimeter (barometer assisted on phones that have one), and plan around sunrise and sunset. Works fully offline in airplane mode.