Ring Snap - Measure Ring Size

Measure your ring size instantly with jewellery-grade precision. Calibrated for real-world accuracy, right on your iPhone.

RingSnap — Card-Calibrated Ring Sizer

Measure any ring size directly on your iPhone with precision you can trust. No tools. No guesswork. Just accurate results in seconds.

Key Features: Jewellery-Grade Precision Match your ring to an on-screen guide with pixel-level accuracy.

Card-Based Calibration Calibrate once using a standard card for real-world measurements.

Instant Results Get your ring size immediately in mm and international standards.

Save Your Sizes Store multiple measurements and access them anytime.

Designed for Simplicity Clean, minimal interface focused on one thing — accuracy.

Perfect For: • Buying rings online • Checking your own size • Measuring existing rings • Gifts and surprises • Avoiding resizing mistakes

How It Works:

1. Calibrate your screen using a card
2. Place your ring on the screen
3. Align the inner edge
4. Get your size instantly

Know your size before you buy. With RingSnap, precision fits in your pocket.