Compass Observation App
Compass Observation App Summary
Compass Observation App is a mobile Android app in Tools by Mariner's Hand App. Released in Jun 2025 (9 months ago). It has about 2.3K+ installs Based on AppGoblin estimates, it reaches roughly 383 monthly active users . Store metadata: updated Jun 30, 2025.
Recent activity: 169 installs this week (525 over 4 weeks) showing steady growth View trends →
Store info: Last updated on Google Play on Jun 30, 2025 .
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App Description
Compass Observation App helps mariners to calculate Compass Error.
Navigate the stars with precision! This gyro compass observation app is designed for navigators, mariners, and astronomy enthusiasts. It offers powerful tools for celestial navigation and compass correction in an intuitive interface.
🔹 Features include:
- Easy switch between Light or Dark theme
Auto or manual input of current position and time
Selection of celestial bodies: Sun, planets, and stars
Detailed object info: Declination, RA, rise/set times (Local & UTC)
Star Finder with interactive sky map (Azimuth & Altitude)
Compass Error Calculator: Input gyro & true heading, get instant your error.
Auto-filled magnetic variation based on your location (editable)
Gives Caution Message if your compass error or deviation exceeds SOLAS Limits.
Calculation page aligned with compass record book format for easy logging.
Compass Observation app assists navigation officers to calculate their compass error in most seamless and efficient way.