Age Rating
4+
Apps in this category do not contain restricted content.
9+
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
12+
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
17+
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

About Ring Sizer: iRing

Find your perfect ring size with iRing -- the most complete ring sizing and jewelry guide app available.

Whether you are buying a ring online, choosing a wedding band, or exploring engagement rings, iRing gives you everything you need in one app.

PRECISE MEASUREMENT TOOLS

Ring Sizer - Match your ring to a circle on screen. Customize grid colors and line thickness for a precise fit.

Finger Sizer - Use an interactive slider to measure your finger directly. Simple, precise, and fast.

Size Converter - Instantly convert between US, UK, EU, JP, and other international ring size standards.

Size Chart - A complete, easy-to-read reference for every ring size standard worldwide.

Calibration Tool - Calibrate your screen with a physical ruler for maximum measurement accuracy.

COMPLETE JEWELRY KNOWLEDGE

Ring Style Guide - Explore 16 iconic ring styles including solitaire, halo, three-stone, eternity, and cluster. Learn what makes each design unique and find your perfect match.

Metal Guide - Compare 12 precious metals including gold, platinum, titanium, tungsten, and palladium. Understand durability, hypoallergenic properties, and care needs.

Gemstone Encyclopedia - Discover 21 gemstones with detailed properties, hardness ratings, origins, and a complete birthstone calendar by month.

Ring Anatomy - Learn every part of a ring from prong to shank with an interactive visual guide.

Ring Care Guide - Expert tips to clean, store, and protect rings made from different metals and gemstones.

HELPFUL TOOLS

Size Finder Quiz - Not sure where to start? Answer a few quick questions and get a personalized ring size recommendation.

Finger Guide - Learn which finger to measure, how ring sizes differ between hands, and how finger size changes throughout the day.

Measurement History - Save and compare your measurements over time to track changes.

WHY CHOOSE iRING?

No physical tools needed
Accurate and easy to use
Works on all iPhones and iPads
Beautiful design with haptic feedback
Perfect for jewelers, gift shoppers, and ring enthusiasts
Free core features with optional Premium for the full experience

Start measuring your rings today with confidence.


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What's New in the Latest Version 1.1.0

Last updated on Apr 7, 2026
Old Versions
What's New in v1.1.0

RING STYLE GUIDE
Explore 16 iconic ring styles from solitaire and halo to three-stone and cluster.

METAL GUIDE
Compare 12 metals including gold, platinum, titanium, and palladium with care tips.

GEMSTONE ENCYCLOPEDIA
Discover 21 gemstones with hardness ratings, origins, and a birthstone calendar.

SIZE FINDER QUIZ
Answer a few quick questions and get your estimated ring size instantly.

RING ANATOMY
Learn every part of a ring with an interactive visual diagram.

RING CARE GUIDE
Expert tips to clean, store, and protect your rings.

FINGER GUIDE
Learn which finger to measure and how size varies throughout the day.

Redesigned onboarding experience and premium splash screen.
Show More
Version History
1.1.0
Apr 7, 2026
What's New in v1.1.0

RING STYLE GUIDE
Explore 16 iconic ring styles from solitaire and halo to three-stone and cluster.

METAL GUIDE
Compare 12 metals including gold, platinum, titanium, and palladium with care tips.

GEMSTONE ENCYCLOPEDIA
Discover 21 gemstones with hardness ratings, origins, and a birthstone calendar.

SIZE FINDER QUIZ
Answer a few quick questions and get your estimated ring size instantly.

RING ANATOMY
Learn every part of a ring with an interactive visual diagram.

RING CARE GUIDE
Expert tips to clean, store, and protect your rings.

FINGER GUIDE
Learn which finger to measure and how size varies throughout the day.

Redesigned onboarding experience and premium splash screen.

Ring Sizer: iRing FAQ

Click here to learn how to download Ring Sizer: iRing in restricted country or region.

Ring Sizer: iRing Alternative

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