123+ iOS apps curated and reviewed
If you already know Bubble Level, this is the deeper bench. 123+ azimuthdiffslope apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5★ (675) | Yes | Yes | Jul 2026 |
| 2 |  | Free | 4.6★ (2.2K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.6★ (8.3K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.6★ (2.9K) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.7★ (847) | No | Yes | Jul 2026 |
| 6 |  | Free | 4.2★ (19) | No | No | May 2026 |
| 7 |  | Free | 4.7★ (2.3K) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.1★ (221) | No | No | Jul 2026 |
This app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.
This app provides precise geographical orientation with a compass and displays vital data like altitude, weather, and location. It helps users navigate, record locations, and measure real-time GPS speed, making it a useful travel companion.
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 utility app transforms your device into a multi-sensor tool. It provides real-time readings for GPS, altitude, speed, barometric pressure, acceleration, magnetic force, sound levels, and light intensity. Visualize data with graphs and maps, mark values, and record sensor information for later analysis.
Navigate the seas with advanced marine charts, GPS, and AIS data, even offline. This app offers detailed bathymetry, community-contributed map data, and dynamic features for safe boating, sailing, and fishing.
This app transforms your iPhone into a digital compass-clinometer for geological data capture. It allows for efficient measurement of planar and linear features, georeferenced photo and note storage, and offline map support for fieldwork.
This app helps you navigate by displaying your direction on a compass, overlayed on a satellite or map view. It provides your street address, GPS coordinates, and altitude, along with What3Words coordinates for precise location identification.
Measure angles precisely using your device's sensors. It functions as both a protractor and a 3D angle meter, allowing you to determine angles between surfaces or lines on a plane with high accuracy. Save your measurements by taking photos with the angle recorded.
Access detailed location data from your device, including GPS coordinates, elevation, speed, and direction. View information in a clear list format, with options for full-screen displays on iOS for at-a-glance monitoring while moving.
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.
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.
Track vessels globally with near real-time AIS data, view ship details, and analyze performance. Access historical tracks, voyage information, and detailed nautical charts. Receive alerts for port events, voyage changes, and weather phenomena.
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 helps you measure angles with your iPhone. It provides notifications when a target angle is reached, with options for visual and auditory alerts.
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 tool uses augmented reality to help align satellite dishes with precise 3D models and real-time satellite views. It provides a comprehensive database of transponders and channel information worldwide, streamlining installations.
This free digital tool replicates a traditional magnetic compass, offering a simple interface to display cardinal directions and intermediate points. It helps users determine their current orientation for various everyday and outdoor activities.
This app offers a realistic pocket compass experience with modern features like MGRS, sun/moon tracking, and GPS coordinates. It provides multiple display styles and advanced measurement tools for various applications.
Easily find the perfect meeting spot by calculating the geographic midpoint between multiple locations. Add destinations using addresses, your current location, or contacts. Seamlessly transfer the calculated midpoint to your preferred mapping application.
This app provides digital nautical charts and navigation tools for safe boating. It offers offline chart downloads, real-time AIS tracking, and community-shared points of interest. Plan and share your routes with ease.