Ring Sizer: Ring Size Finder

Find your ring size in 30 seconds – right on your iPhone screen. No plastic sizer, no trip to the jeweller.

TWO WAYS TO MEASURE
• I have a ring: lay a ring that fits on the screen and grow the gold circle until it exactly fills the hole. The circle is drawn at true physical size, so its diameter is your ring size.
• Measure my finger: wrap a paper strip around your finger, mark the overlap, lay it on the on-screen ruler and drag the marker to your mark.

EVERY SIZE SYSTEM
Your result in US & Canada, UK & Australia, Europe (ISO), diameter in mm, Japan & China, Italy, Spain & Switzerland and France – plus a complete size chart from US 3 to 13.

PERFECT FOR SURPRISES
Planning a proposal or a gift? Measure one of their rings secretly and save it in My Sizes until the big day.

ACCURATE ON EVERY IPHONE
The app knows the exact screen size of every iPhone model. For a new model or a thick screen protector, calibrate once with any bank card in 20 seconds.

PRO
Unlimited saved sizes for the whole family and every country's size system. Choose weekly, monthly or yearly (with a 3-day free trial), or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period.

Tips: measure in the afternoon at room temperature, and go half a size up for wide bands.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/