171+ iOS apps curated and reviewed
The best slope angle apps on iPhone average 4.1★ across 171+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
Easily measure tilt angles with this free protractor app. It displays inclination from 0 to 359 degrees, along with gradient percentages and angles summing to 180 or 360 degrees. Switch to theodolite mode to set a specified angle to zero.
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 offers a suite of measurement and detection tools, including a bubble level for alignment, angle measurement, surface flatness checks, and metal detection. It also features an AR ruler for distance measurement and an inclinometer for off-road navigation.
This app transforms your device into a versatile measuring tool. It offers precise angle readings with a digital protractor and bubble level, along with AR-powered distance and volume measurements. Ideal for professionals, DIY enthusiasts, and everyday tasks requiring accuracy.
Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.
This app provides a precise spirit level using your smartphone's sensors. It helps you align objects horizontally, vertically, or at any angle, making it ideal for DIY projects and handyman tasks. Premium features offer augmented reality and advanced measurement capabilities.
Measure angles precisely on photos or in real-time using your camera. This user-friendly tool allows for unlimited angle measurements simultaneously, with features like scaling and color adjustment for ease of use.
Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.
Measure angles and slopes with your phone's camera. Offers real-time angle display, two measurement modes, and the ability to capture and store measurements.
Calculate all aspects of a ramp's dimensions, including slope, run, length, and rise. It can also measure the slope of existing surfaces using your device's sensors. Supports various input combinations for flexible calculations.
Transform your device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.
This utility app provides a straightforward tool for measuring tilt angles on any surface. It combines a digital reading with an analog-style interface for ease of use. Ideal for quick angle measurements without complexity.
This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.
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.
This tool transforms your device into a precise angle measurement instrument. It's ideal for DIY projects, construction, and renovations, offering real-time readings in various formats. Get professional-grade accuracy for all your angled surface needs.
This utility app uses your phone's sensors to provide precise leveling and plumb measurements. It features three vials for plumb, level, and 45° angles, with an option to overlay readings on your camera view. Calibration is available to ensure accuracy.
This utility app functions as a digital bubble level, angle meter, and tilt meter. It helps users align picture frames, measure slopes, and assist with home decoration. Calibration instructions are provided for accurate measurements.
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 professional-grade tool measures angles and inclines with precision. It offers features like motion-sensitive auto-locking, relative angle measurement, and haptic feedback for accurate adjustments. Ideal for tasks ranging from picture alignment to complex engineering measurements.
This utility app measures angles, checks surface flatness, and provides real-size measurements using your phone's sensors. It's ideal for home improvement, DIY projects, and educational purposes, offering accurate results offline with an intuitive interface.