145+ iOS apps & games curated and reviewed
From beginner-friendly picks to power-user tools, our find circumference of a circle list covers 145+ iPhone apps and games updated through May 2026. Compare ratings, prices, and screenshots in one place.
This utility app provides a straightforward way to calculate circle properties. Simply input one known value (radius, diameter, circumference, or area) to instantly get the results for the others. It's designed for quick and no-fuss calculations.
Calculate key parameters for 26 geometric shapes, including 2D planes and 3D solids. Offers 783 calculations with interactive 3D views for solids. Supports multiple languages and devices.
This educational tool quickly calculates circumference, area, and diameter of a circle. It's designed for students to save time on manual calculations with a simple, user-friendly interface.
This app simplifies circle geometry calculations by instantly solving for all properties (radius, area, diameter, circumference) from a single known value. It's ideal for students, engineers, designers, and DIYers needing quick, accurate measurements.
Transform your device into a versatile digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.
Easily determine your ring size across multiple countries using metric or imperial units. Features visual guides and supports various international sizing standards. Share your size and explore a jewelry catalog.
Calculate the area and circumference of a circle using its radius or diameter. This tool applies the correct mathematical formulas for accurate results.
Easily calculate lengths, angles, and areas of various geometric shapes. Input known values and instantly get precise results for a wide range of 2D and 3D figures. Ideal for students and engineers needing quick geometric computations.
Transform your device into a digital tape measure. Quickly gauge the size of real-world objects, determine a person's height, and automatically get dimensions for rectangular items. Save and share your measurements easily.
Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats and saves your work in a history for easy access and sharing.
This app calculates various parameters of circular arcs and segments. It supports multiple input combinations and offers unit flexibility for length and angles. Calculations are automatically saved and can be shared via email.
This utility app instantly calculates the area of a circle based on its radius or diameter. It seamlessly converts between imperial and metric units in real-time, supporting various measurements like centimeters, meters, inches, feet, and yards.
This app simplifies calculating the circumference of circles. It's a useful tool for students to check their math work in educational settings.
This game challenges players to rotate a central circle to align and unravel all surrounding circles. It offers a simple yet engaging puzzle experience focused on spatial reasoning and precision.
This augmented reality app transforms your phone into a versatile measuring tool. Accurately measure distances, surfaces, angles, and even detect studs. Visualize furniture placement and create floor plans with ease.
Easily measure jewelry ring sizes using your phone's screen. Simply place your ring on the screen and adjust the slider to match its inner edge. The app provides accurate sizing in multiple international measurement systems.
Navigate a circular platformer, collecting circles to restore a forgotten one. Unlock color palettes and enjoy unique music in this infinite running experience.
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.
Master the unit circle with this engaging quiz game. Study angles in radians and degrees, along with their coordinates. Track your progress with a high score list and improve your test readiness.
Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats including negative values, decimals, fractions, and pi. Save, share, and revisit past calculations.