186+ iOS apps curated and reviewed
Every iPhone needs a few good circumference apps. We benchmark 186+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 1.0★ (3) | No | No | May 2026 |
| 2 |  | Free | 4.6★ (34) | No | Yes | Aug 2026 |
| 3 |  | Free | 1.0★ (7) | — | No | Aug 2026 |
| 4 |  | Free | 4.5★ (4) | No | No | May 2026 |
| 5 |  | Free | — | Yes | Yes | Jun 2026 |
| 6 |  | Free | — | No | No | May 2026 |
| 7 |  | Free | 4.6★ (162) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.5★ (77) | Yes | Yes | Jun 2026 |
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.
Measure and track your body size metrics over time. Compare your measurements to national and global averages, and gain insights with a built-in analysis tool. Your data is kept private and secure.
This app simplifies calculating the circumference of circles. It's a useful tool for students to check their math work in educational settings.
Calculate the area and circumference of a circle using its radius or diameter. This tool applies the correct mathematical formulas for accurate results.
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 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.
This app helps you accurately measure your ring size at home. It offers precise measurements in various units and international standards, eliminating guesswork for perfect-fitting jewelry. Ideal for online shoppers, gift-givers, and jewelers.
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 app functions as a digital measuring tool, allowing you to measure objects and distances with accuracy. It also enables you to create sketches with text annotations and share your measurements and designs.
Track your weight loss, body measurements, and BMI with this app. Log photos and data to visualize your progress, understand the impact of workouts and diets, and stay motivated with rewards. Syncs with health platforms.
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.
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.
Transform your smartphone into a precise digital measuring tape. Measure objects, size furniture, and scan rooms in 3D using augmented reality. Supports multiple units and allows saving/sharing measurements.
Measure lengths and distances in the real world using your device's camera. Supports single line, chained measurements, and perimeter calculations. Customize measurements with different colors.
This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.
This app assists students with their math homework by solving a wide range of problems. It offers features for algebra, trigonometry, and calculus, including graphical analysis and equation solving. Optional subscriptions provide unlimited access to all features.
Measure distances and areas directly on a map. Set waypoints by tapping and holding, and easily switch between various measurement units. Save and restore your measurements for later use.
Solve math problems by scanning them and receive step-by-step explanations. Access an AI assistant for detailed answers on math, science, and more. Supports a wide range of math subjects and offers various calculator tools.
Measure distances and land areas directly on maps for outdoor projects. Quickly calculate lot sizes, building footprints, and perimeters for various applications like landscaping and construction. Supports both imperial and metric units.
Easily determine your ring size from the comfort of your home. This app eliminates the need for physical charts or store visits, providing quick and accurate sizing in minutes.