85+ iOS apps curated and reviewed
Protractor+ is the household name in rule angle, but it's far from the only option. We track 85+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
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.
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.
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.
Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.
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 app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.
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.
This app digitally recreates various types of slide rules, offering features not possible on physical models like color options and numeric displays. It includes a slideshow of famous slide rules and is best experienced on larger devices.
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.
This app simplifies angle calculations and conversions. It handles degrees, minutes, and seconds (DMS) for applications in construction, surveying, and GPS. Perform conversions, mixed calculations, and track your history.
Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.
This utility app functions as a precise digital protractor for measuring angles on your device. It offers a smart instrument for accurate angle measurement, supporting iPhone and iPad. The app is free to download and use.
This app displays the tilt angle of your device across three axes: yaw, pitch, and roll. It offers customizable angle notifications with vibration and sound alerts, and allows you to reset angles relative to the ground or a table. A camera view can be activated for live visual context.
This utility app uses your device's sensors to accurately measure the angle and inclination of surfaces. Save, name, and share your measurements, with advanced features available through an in-app purchase.
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.
This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.