TrueN Compass — True North

TrueN Compass is a precision compass for hikers, photographers, surveyors, and anyone who needs an accurate bearing — fast.

It uses your phone's rotation-vector sensor with low-pass filtering on the unit-vector circle, so the dial is rock-steady instead of jittery. Switch between magnetic and true north in one tap; declination is auto-calculated from your GPS location.

KEY FEATURES
• True north / magnetic north toggle with automatic declination
• GPS coordinates in decimal (DD) or degrees-minutes-seconds (DMS)
• Altitude and reverse-geocoded address
• Bubble level (pitch + roll) for hand-leveling shots
• Bearing lock — tap the dial to set a target heading and follow the offset
• Calibration figure-8 prompt when sensor accuracy drops
• Haptic feedback when crossing N / E / S / W and on bearing target
• Material 3 design with system-following dark mode
• Korean and English localization

PRIVACY
Your location is used only on-device to compute true north, show coordinates, and look up the nearest address. It never leaves your phone. The location permission is optional — magnetic heading works without it.

ADS
Free with a non-blocking bottom banner. Watch a short rewarded video to remove ads for 30 minutes. No launch interstitials, no mid-session full-screen ads.

PERMISSIONS
• Location (optional) — for true north, coordinates, altitude, and address
• Vibrate — for cardinal-crossing haptic feedback
• Internet — only used by reverse geocoding and ads

Built for Android 8.0+ (API 26). Works on phones and tablets in portrait and landscape.

v1.0.0 — Initial release.
• Magnetic / true north toggle with automatic declination
• GPS coordinates (DD/DMS), altitude, address
• Bubble level, bearing lock, calibration prompt
• Haptic feedback on cardinals and target
• English / Korean localization
• Watch a short video for 30 minutes ad-free

Tags / category
Category: Tools
Content rating: Everyone
A simple and accurate compass app.
Features include true north detection,
magnetic declination correction, and bearing display.