Ring Sizer - Ring Size Finder
Ring Sizer - Ring Size Finder Summary
Ring Sizer - Ring Size Finder is a free iOS app in Tools by 100 Factories. Released in Mar 2026 (7 months ago). It has 9.00 ratings with a 4.89★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 70 monthly active users . Store last updated Oct 6, 2026
Ring Sizer - Ring Size Finder SDKs Summary
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4.89★
Ratings: 9.00
Screenshots
App Description
Find your ring size in seconds — no trip to the jeweler needed.
MEASURE WITH YOUR FINGER
Place your finger on the screen and adjust the guide to estimate your size. Great when you don't have a ring to compare.
MEASURE WITH A RING
Place a ring you already own on the screen and match the circle to the inside edge. The most accurate way to find your size at home.
EVERY SIZE SYSTEM YOU NEED
See your result in US/CA, UK, JP, diameter (mm & inch), and circumference (mm) — all at once, no switching.
SCREEN-CALIBRATED ACCURACY
Auto-detects your iPhone model for precise on-screen measurements.
SAVE & COMPARE
Label and save measurements for yourself, a partner, or family. Come back anytime to check.
Free. No ads. No account required.