Compass & Altimeter

This application is designed to provide a variety of useful features for outdoor activities and navigation. One of its main advantages is that it can be used offline and without network access, making it a reliable tool even in remote locations. It also offers accurate geographic north readings by taking into account magnetic declination, which is the difference between true north and magnetic north. This is important for accurate navigation and orientation in the field.

In addition to providing true north readings, the app also offers true altitude above mean sea level (AMSL) data. This is useful for hikers, climbers, and other outdoor enthusiasts who need to know their exact elevation. The app also includes sunrise and sunset times, which can be helpful for planning outdoor activities and staying safe during low light conditions.

The app offers a variety of dials and color themes, including a high contrast option for better visibility in different lighting conditions. It also has angle measurement capabilities, allowing users to measure angles using the dials. Another useful feature is the bubble level functionality, which is available on the iPhone dial. This can be helpful for tasks that require precise leveling, such as setting up a tent or building a structure.

The app supports various coordinate formats, including MGRS, UTM, DD, DMM, DMS, British National Grid, and SwissGrid. This makes it a versatile tool for users around the world. It also has a magnetic field strength feature, which can detect potential perturbations that may affect the accuracy of the compass. The app also displays the sensor accuracy, giving users an idea of how reliable the readings are.

One unique feature of this app is its use of EGM96 as the geoid reference for computing altitude. This model takes into account the Earth's gravitational field and provides more accurate altitude readings than other methods. However, it should be noted that the app works best outside where magnetic perturbations are low. Magnetic closure cell phone cases may also disrupt the accuracy of the compass.

Overall, this app is a useful tool for anyone who enjoys outdoor activities and needs reliable navigation and orientation assistance. Its various features and customizable options make it a versatile and user-friendly choice. So go ahead and have fun exploring the great outdoors with this handy compass app!