Knuckle vs Ring Sizer

Knuckle turns your screen into a ring sizer. Lay a ring you already own flat on the display, match the gold circle to the inside of the band, and read the size. That is the whole thing. No camera, no printing, no paper strips to cut out, no trip to a jeweler. Before the first measurement you line a bank or ID card up against an outline, once, so Knuckle learns exactly how large a millimetre is on your particular screen. Every reading after that is true to your device. You get the inner diameter in millimetres next to the sizes people actually ask for - US, UK, EU, Japan, Australia, Hong Kong and Italy. Each result carries an honest confidence band instead of one number pretending to be certain. Sizes are worth keeping. Save one under the person it belongs to, note the finger and the hand, and look it up later while you are standing in the shop. Send a clean size card to whoever is buying. Nothing leaves your device. No account, no sign in, and it all works with the network switched off. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Find your ring size right on your iPhone. Measure an existing ring on screen or measure your finger without a ring, then get your diameter, circumference, and ring size in US, UK, EU, and JP sizing systems. No printing, paper size charts, account, or extra tools required. Whether you're buying a ring, choosing a gift, or helping a customer find the right size, you can get the measurements you need in seconds. IDEAL FOR • Finding your ring size before buying jewelry online • Measuring an existing ring that already fits • Measuring your finger when you don't have a ring • Choosing a ring size for a gift, engagement, or wedding • Helping customers compare ring sizes across different sizing systems KEY FEATURES ◆ MEASURE AN EXISTING RING Place a ring on your iPhone screen and adjust the on-screen guide to match its inner edge. Get its diameter, circumference, and corresponding ring size. ◆ NO RING? MEASURE YOUR FINGER Don't have a ring to measure? Use the finger measurement flow to find your size without an existing ring or a printed size chart. ◆ US, UK, EU & JP RING SIZES See your result in US, UK, EU, and JP sizing systems, making it easier to shop from jewelers and stores that use different size standards. ◆ DIAMETER & CIRCUMFERENCE Get more than a ring size. View the measured diameter and circumference to help compare sizes and check jewelry measurements. ◆ NO PRINTING OR EXTRA TOOLS Measure with your iPhone without printing a ring sizer or using a ruler, measuring tape, or other equipment. ◆ QUICK & SIMPLE Open the app, choose how you want to measure, and get your result in seconds. No account or lengthy setup required. FREQUENTLY ASKED QUESTIONS How can I find my ring size with my iPhone? You can measure an existing ring directly on your iPhone screen or use the finger measurement flow if you don't have a ring. Can I measure a ring I already own? Yes. Place a ring that fits you on the screen and adjust the guide to its inner edge to determine its measurements and size. How can I find my ring size without a ring? Use the finger measurement flow. It lets you estimate your ring size without an existing ring or a printed ring sizer. Which ring size systems are supported? The app shows ring sizes in US, UK, EU, and JP systems, along with diameter and circumference. Can I use it when buying a ring as a gift? Yes. If you have access to a ring that fits the person, you can measure it on your iPhone and use the result when comparing ring sizes. Is this useful for jewelers and jewelry sellers? Yes. Jewelers and sellers can use it as a quick way to measure rings and compare sizes across US, UK, EU, and JP sizing systems. SUBSCRIPTION INFORMATION Payment will be charged to your iTunes Account at confirmation of purchase. Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period. The renewal cost depends on the selected subscription plan. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Support Address: support@getringsize.app Privacy Policy: https://getringsize.app/pp Terms of Use: https://getringsize.app/tou