FitMyRing vs Screen Ring Sizer

Measure a ring's inner size directly on your iPhone or iPad screen. Place the ring on the display, move the circle into the ring opening, and pinch with two fingers until the circle matches the inner edge. The app shows the diameter, radius, circumference, and nearest sizes for Metric, US/CA, UK/AU, EU/ISO, and JP/CN systems. FitMyRing works locally on your device. It does not use a camera, account, server, cloud sync, ads, or analytics. Measurements are for reference. For expensive purchases or resizing, confirm the size with a jeweler.

Ring Sizer: Find Your Perfect Fit Never guess your ring size again. Ring Sizer turns your phone into a simple, accurate sizing tool — no trip to the jeweler required. Two ways to measure: Measure your finger directly using your phone screen Already have a ring you love? Lay it on the screen and size it in seconds Why Ring Sizer: Completely free, no in-app purchases, no subscriptions - 100% private, everything happens on your device, nothing is ever uploaded or stored in the cloud - No account or sign-up required - Instant results in US, UK, and EU sizing standards - Simple, clean interface anyone can use