Knuckle vs SizeMyRing

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 any ring size in under two minutes — no jeweler, no guesswork. SizeMyRing turns your iPhone into a precise ring-sizing instrument. Measure four ways, get every international size at once, and save it forever. MEASURE HOW YOU LIKE • Ring on screen — lay a ring on the display and match the glowing circle to its inner edge. • Finger on screen — set two bars to the width of your finger. • Camera — photograph a ring or hand next to any bank card for scale. • String or paper — the classic wrap-and-measure, guided step by step. EVERY STANDARD, INSTANTLY See US/Canada, UK/Australia, EU (ISO), Japan/China and Swiss sizes together, plus exact inner diameter and circumference in millimetres. A built-in converter and full size chart are included. PERFECT FOR GIFTS Gift Mode measures a partner's ring discreetly in about 60 seconds — ideal for engagement rings. Save sizes for the whole family so you're ready for every birthday and anniversary. ACCURATE & PRIVATE Calibrate the screen with any standard payment card to make on-screen measurement jeweler-grade. Everything is measured and stored on your device — no account, and photos never leave your iPhone. SIZEMYRING PREMIUM Unlock unlimited measurements, every tool, unlimited saved people, PDF chart export and jeweler-ready sharing. Choose a weekly plan with a 3-day free trial, an annual plan, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://emeraldapps.io/sizemyring/terms Privacy Policy: https://emeraldapps.io/sizemyring/privacy