213+ iOS apps curated and reviewed
Every iPhone needs a few good ring size calcluator apps. We benchmark 213+ 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 | 4.5★ (6.7K) | Yes | No | Aug 2026 |
| 2 |  | Free | 4.8★ (85) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.2★ (2.4K) | Yes | Yes | Aug 2026 |
| 4 |  | Free was $0.99 | 4.8★ (460) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 1.0★ (1) | No | No | May 2026 |
| 6 |  | Free | 4.4★ (75) | Yes | Yes | May 2026 |
| 7 |  | Free | 4.5★ (22) | No | Yes | Jul 2026 |
| 8 |  | Free | 2.1★ (211) | Yes | No | May 2026 |
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.
Easily measure your finger and ring sizes from home with this intuitive app. It uses advanced technology to ensure accurate sizing for wedding or engagement rings, helping you find the perfect fit for online or in-store purchases.
This application helps you accurately measure ring and finger sizes without the need for physical tools. It offers a user-friendly interface and supports various measurement systems for precise results, making online jewelry shopping easier.
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.
Easily determine your ring size at home. This utility app allows you to measure your finger using common household items like credit cards or coins. Get accurate measurements for your jewelry purchases.
Easily determine your ring size using your phone's screen. Simply place a ring on the designated area and adjust the slider to match its inner edges. The app then displays your ring size in various international formats.
Easily determine your precise ring size with this user-friendly tool. Avoid guesswork and ensure a perfect fit for your next ring purchase, whether for yourself or a gift. It simplifies the sizing process for accurate results.
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.
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.
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.
Easily determine your accurate ring size for any finger with this intuitive application. It provides precise measurements down to 1/8 sizes and offers convenient conversion to international sizing standards.
Accurately measure your finger size or compare existing rings to find the perfect fit. This tool simplifies ring sizing for confident online purchases and jewelry selection.
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.
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.
Easily determine your correct ring size using your smartphone's camera. This app provides accurate measurements for online jewelry purchases or custom designs, eliminating the need for resizing.
Easily determine your correct ring size for ordering class rings. This app works on any mobile device and for any finger, ensuring you can confidently select your style without worrying about size accuracy.
Accurately determine your ring size using your phone's camera and screen. Offers four easy methods, including AR measurement and on-screen guides. Includes a comprehensive size chart for multiple regional standards.
This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.
Instantly determine your ring size by taking a photo of your hand. The app uses advanced AI vision algorithms to accurately calculate your perfect fit, requiring only a standard-sized card in the frame for reference.