Measure magnetic fields in microteslas using your device's sensor. Simply place the screen near a magnet to identify its North or South pole.

91+ iOS apps curated and reviewed
Out of 91+ gaussmeter ns pole apps on iOS, 15 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Measure magnetic fields in microteslas using your device's sensor. Simply place the screen near a magnet to identify its North or South pole.




Determine the north or south pole of a magnet facing your device. It also alerts you if a magnet is too close to your phone. An essential tool for anyone working with magnets.






This app offers precise measurements using augmented reality and on-screen tools. It caters to both professional and everyday needs with features like a flexible measuring tape, bubble level, and photo ruler. Save and manage your measurements within projects for easy access.


Transforms your device into a magnetic field strength meter. Detect residual magnetism in steel objects, measure magnet strength, and analyze magnetic fields on three axes. Useful for various applications including material assessment and component analysis.


Transform your device into a versatile measuring toolkit. It offers a comprehensive suite of 13+ tools including a barometer, altimeter, compass, metronome, stopwatch, timer, and various levels for diverse applications.


This AI-powered mobile tool revolutionizes utility pole data collection, enabling a single worker to accurately measure pole heights and gather comprehensive geospatial data. It offers offline capabilities, customizable workflows, and seamless integration with industry-standard software, streamlining processes for utility professionals.


This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.


This app provides a collection of 12 essential utility tools for your iPhone, including a flashlight, magnifier, unit converter, and more. It offers a versatile and functional solution for everyday tasks and measurements.




Access essential data for specifying and using preservative-treated wood poles. Explore preservatives, national standards, engineering information, and environmental benefits. Includes tools for calculating dimensions and estimating weight.


Measure magnetic field strength and detect metals using your device's sensors. Visualize data in real-time, customize alerts, and map measurement points. Export data and attach media for detailed analysis.


This utility app provides advanced GNSS information for high-precision receivers, crucial for GIS and surveying. It includes an NTRIP client for corrections, user-configurable alarms, and background operation with mapping software.


Turn your iPhone or iPad into a precise measuring tool. Easily measure lengths in centimeters or inches with features like magnifier mode and haptic feedback. Ideal for daily tasks, office use, DIY projects, and on-the-go measurements.


This utility app provides accurate surface measurements using your device's sensors. It offers a virtual level indicator for easy flatness assessment, making it ideal for professionals and DIYers alike. Get precise readings without traditional tools.


This utility app simplifies the collection and documentation of data for utility poles. It offers GPS pinpointing, high-definition photo capture, and customizable property recording for efficient field data management. Seamless collaboration features enable real-time data sharing among teams.


Transform your device into a versatile measuring tool. Accurately check the horizontal and vertical alignment of objects using your camera and device sensors. Measure angles with precision for DIY projects or home improvements.


This utility app helps you measure angles with your iPhone. It provides notifications when a target angle is reached, with options for visual and auditory alerts.


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 utility app provides a precise bubble level for horizontal, vertical, and surface angle measurements, along with a true-north compass. It offers advanced calibration options and works on iOS devices. A Pro version is available for additional features.


This app transforms your iPhone into a powerful audio analyzer. It offers four distinct modes to measure sound frequencies, tune instruments, analyze motor speeds, and check mains stability. Advanced features include measurement history, comparison tools, and CSV export.