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 - Automatic for your device model, then check it against a bank card. The app tells you when it is not calibrated.

Printable Sheet - A true-size PDF with a circle for every ring size and a paper strip to measure your finger.

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.

COMMON QUESTIONS
How accurate is measuring a ring on screen?
Within about half a size once the screen is calibrated. It is good enough to order with confidence for yourself; for a surprise engagement ring, have a jeweller confirm it.

Do I have to calibrate?
Once, and it takes a minute: hold a ruler or a bank card against the screen and match the on-screen scale. Every iPhone and iPad shows a slightly different physical size.

Can I measure a finger without having a ring?
Yes. The finger sizer is a slider you widen until the band on screen sits right on the finger.

Does it convert between international sizes?
Yes: US, UK, EU, Japan and the other standards, both ways, plus a full chart you can read straight off.

Does it need internet or an account?
Neither. Measuring, converting and the saved history all work offline with no sign-up.

My finger feels different in the morning — which size do I use?
Measure at the end of the day, at normal room temperature. Fingers are smallest when you are cold and largest when warm or after salt, and a ring has to pass the knuckle on the worst day.

Terms & Condition: https://masaapps360.com/ringsizer/terms/
Privacy Policy: https://masaapps360.com/ringsizer/privacy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/