Compass Altimeter: Sun & Moon

KnockDream Technology

In-app purchases

About this app

Compass Altimeter is a clean, pro‑grade altitude and compass tool that fuses GPS with (iOS) barometer/absolute altitude for faster, more accurate live readings—ideal for hiking, exploration, landscape photography, and stargazing.

Key Features
• Live altitude: GPS + barometric fusion with accuracy readout
• Relative altitude: set a base point to track ascent/descent
• Compass: True/Magnetic North, localized direction text (NESW), subtle haptics
• Calibration & interference: magnetic interference detection with calibration tips
• Sun & Moon: elevation/azimuth, sunrise/sunset and moonrise/moonset
• Photography aide: golden/blue hour with bearings for better framing
• Coordinates: switch between Decimal and DMS; one‑tap copy
• Sources & accuracy: Auto/GPS/Barometric modes; GPS High/Medium/Low accuracy
• Pressure: live pressure with units (hPa/mmHg/inHg/psi)
• Personalization: m/ft, 12/24‑hour, language, precision display, splash animation

Design & Performance
• Large, legible typography with modern UI
• “Fast‑then‑precise” positioning and smart lifecycle for stability and battery savings

Use Cases
• Hiking and outdoor exploration
• Landscape photography timing (golden/blue hour)
• Astronomy and education
• Travel logging and altitude lookup

Privacy & Permissions
• Location while in use only; used for altitude and sun/moon calculations (no continuous background tracking)
• Motion/Barometer (iOS) improves altitude accuracy
• Preferences stored on device; no personal data uploaded

Disclaimer
• Measurements depend on environment/device and are for reference only
• Not for aviation, medical, or life‑critical use

Ratings and reviews

only critique is the widget altimeter does not change units when the settings change. seems stuck in meters. but beyond that it seems amazing straight forward and easy to use

thank you! finally a simple compass and altimeter that doesn't sell my data

⭐️⭐️⭐️⭐️⭐️ Great and Reliable Compass App! I’ve been using UN Compass for a while and it works perfectly. The design is clean, accurate, and easy to use. It doesn’t drain the battery and shows directions instantly, even offline. I really like how stable it is compared to other compass apps. Highly recommended for anyone who needs a precise and trustworthy compass tool!

What’s new

New in 1.5.0
• Tap the altitude to open Altitude details: effective oxygen, water boiling point, sea-level pressure, air density, and a 3-hour pressure trend chart.
• Optionally show effective oxygen right below the altitude reading.
• Fixed overlapping elements in landscape; cleaner layout.
• Faster, more reliable altitude and location, with better recovery after errors.