249+ iOS apps curated and reviewed
Out of 249+ circumference finder apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | Free | 2.0★ (3) | No | No | Jun 2026 |
| 3 |  | Free | 1.0★ (3) | No | No | May 2026 |
| 4 |  | Free | — | — | No | Aug 2026 |
| 5 |  | $2.99 | 2.0★ (2) | No | No | Aug 2026 |
| 6 |  | Free | 2.3★ (6) | — | No | May 2026 |
| 7 |  | $1.99 | — | No | No | Jul 2026 |
| 8 |  | Free | — | Yes | Yes | Jun 2026 |
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.
Measure distances using your device's camera without relying on GPS. Compare object sizes to estimate distances quickly and simply.
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.
Discover and analyze nearby Bluetooth and BLE devices. See their signal strength, IDs, and proximity to help troubleshoot connectivity issues or locate peripherals.
This app helps you find the perfect ring size with an innovative tap-to-measure feature and visual guides. It supports popular measurement systems like US and EU standards, making it ideal for both professionals and personal use.
Calculate the distance to objects and their height using your device's camera. Simply input your device's height, aim at the object's base, and get an accurate measurement. Supports both metric and imperial units.
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.
This app helps you find locations worldwide, convert coordinate formats, and view them on a map. It offers tools for calculating area, finding sun and moon times, and determining time zones. It also includes a compass and displays your current GPS coordinates.
Accurately measure ring and finger sizes from home, ensuring a perfect fit for any occasion. Convert sizes internationally and save measurements for future use. Ideal for online ring purchases, eliminating guesswork.
Estimate distances to objects using your iPhone's camera. Simply take a photo, identify the object's height or width, and the app calculates the range. Useful for activities like golfing and shooting sports.
This app transforms your device into a versatile measurement tool. It utilizes augmented reality, a compass, and an inclinometer to measure distances, heights, and angles to objects. You can also map distances, track waypoints, and view celestial data.
This educational application assists students in calculating heights by determining angles above the horizontal. It simplifies complex measurements for inaccessible areas.
This geometry tool simplifies trigonometry and triangle calculations. It provides quick and accurate results for various measurements, including angles, sides, area, and advanced geometric properties. Ideal for students, professionals, and anyone needing precise calculations.
This app provides golfers with a straightforward and precise GPS rangefinder. It helps players accurately measure distances on the course to improve their game.
This app uses a 3D body scanner to provide detailed body composition analysis, including body fat percentage, girth, and volume measurements. Track your progress visually with 3D comparisons and heatmaps, and receive personalized feedback to achieve your fitness goals.
Measure your ring size accurately by placing a ring on your screen and adjusting a dot to match its inner diameter. Get your size in seconds without needing a physical sizer.
Easily determine your ring size at home using your finger or an existing ring. Get results in multiple international sizing systems instantly. Save your measurements for future reference.
