194+ iOS apps curated and reviewed
The best magnetic declination apps on iPhone average 4.5★ across 194+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
This app allows users to measure and contribute to scientific research on Earth's magnetic field using their smartphone. It offers features for recording magnetic data during various activities, including flights, and provides tools for data visualization and analysis.
This navigation tool calculates magnetic variation, the difference between true and magnetic north, essential for plotting courses on maps. It's designed for pilots, sailors, cartographers, and anyone using maps and a compass.
This app offers a beautifully designed compass experience for your iPhone or iPad. It provides precise GPS coordinates, altitude, sunrise/sunset times, and barometric pressure. Easily share your location and choose between magnetic or true north.
This app provides tools for geological, geophysical, engineering, and geographic work. It helps estimate geophysical quantities like Bouguer anomaly and magnetic declination, and offers a quick coordinate converter. It's designed for professionals and enthusiasts interested in Earth Sciences.
This utility app provides a digital compass to help you determine cardinal directions. It's useful for outdoor activities, travel, or low-visibility conditions, and also displays GPS altitude and your current location on a map.
This app combines essential tools for travelers, including a compass with GPS and magnetic north options, a bright flashlight with Morse code transmission, a teslameter, an altimeter, and a barometer. It offers real-time data for navigation, elevation, and atmospheric pressure.
This application provides a digital compass to easily identify cardinal directions and any arbitrary direction. It offers the flexibility to switch between magnetic and true north, and includes a map rotation feature. A barometer function is also available on compatible devices.
This app transforms your device into a highly accurate and elegantly designed compass. It offers instant navigation, showing your location, altitude, and orientation with a user-friendly interface. Perfect for outdoor adventures and everyday use.
This app calculates magnetic variation using the World Magnetic Model for any location and year between 2025-2029. You can find variation by browsing a map, selecting an airport, or entering coordinates.
This app accurately calculates magnetic declination worldwide using the World Magnetic Model from NOAA. It has been updated with modern Swift and SwiftUI tools for improved performance and features.
This navigation app provides real-time course, speed, and position data on a clear display. It offers turn-by-turn navigation with voice prompts, map overlays, and the ability to save tracks and points of interest. Additional features include sunrise/sunset times, horizon distance calculation, and specialized functions for sailing and geocaching.
This application uses your smartphone's magnetic sensor to detect nearby metal objects. It can help you find hidden metallic items, act as a treasure hunting tool, or even assist in ghost hunting by visualizing magnetic field trends. Requires a device with a magnetic sensor to function.
This application provides a large, easy-to-read compass display to show your direction and heading. It utilizes your device's internal hardware for accurate estimations.
Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.
Detect electromagnetic fields (EMF) using your device's sensors. Get alerted to high magnetic fields and potential radiation sources in your home. Useful for identifying hidden emitters and understanding your environment.
This app provides an accurate and easy-to-read compass for outdoor activities like hiking and camping. It displays heading, magnetic north, cardinal directions, temperature, and altitude. A flashlight is also included for nighttime use.
Monitor Earth's magnetic field and solar activity in near real-time. Track Kp and A indices, solar wind speed, solar flares, and proton/electron flux. Predict auroras and magnetic storms.
Visualize magnetic fields in 3D and measure their strength and direction. Explore objects, detect hidden lines, or estimate your position without GPS. Offers multiple display modes for magnetic and acceleration data.
This app provides accurate directional guidance with a digital compass, wind direction, and Qibla finder. It offers offline functionality, location saving, weather updates, and altitude monitoring, making it a versatile navigation tool for various outdoor activities and everyday use.
Monitor geomagnetic storms and Earth's magnetic field. Understand how these events can impact health, communications, and navigation. Plan your activities and protect yourself from potential negative effects.