Ring Sizer & Finger Measure
Engagement Wedding Band Gauge
About
Accurately measure ring sizes using your iPhone. This app provides jeweler-level precision by calibrating to your device, offering two measurement methods and instant conversion between six international standards. Save multiple sizes and access a complete conversion table for confident online jewelry shopping.
What's New in Ring Sizer & Finger Measure
1.0.8
May 31, 2026
What's New NEW FEATURES: • Enhanced finger measurement accuracy • Improved conversion table with better readability • Bug fixes and performance improvements PERFECT FOR: • Engagement ring shopping season • Holiday gift buying • Quick professional measurements Love the app? Leave us a review! Need help? Contact support@leanstudio.asia
MoreSubscription plans
Premium Yearly
All premium tools & auto-renew
In-App Purchases
$49.99
Lifetime
One-time purchase, lifetime use.
Developer apps
FAQ
How accurate is Ring Sizer & Finger Measure?
The app offers device-calibrated accuracy, applying specific PPI settings for your iPhone model to ensure millimeter-perfect measurements. For example, it adjusts for differences between an iPhone SE (326 PPI) and an iPhone 15 Pro Max (460 PPI) to ensure a displayed 17mm circle truly measures 17mm on screen.
What measurement methods does Ring Sizer & Finger Measure offer?
You can measure an existing ring by placing it on your screen and matching its inner diameter to an on-screen circle, or you can measure your finger directly using a visual guide with precision crosshairs.
What international ring size standards does Ring Sizer & Finger Measure support?
It instantly converts between US/Canada (3-13), UK/Australia (F-Z), EU/ISO (44-70), Japan/China (4-30), millimeters (14.0-22.3mm), and inches (0.55-0.88 in).
Can I save ring sizes for different people with Ring Sizer & Finger Measure?
Yes, you can build a personal collection of ring sizes organized by hand and finger, adding custom titles for each entry. This is ideal for tracking family gift sizes or client records.
Does Ring Sizer & Finger Measure work offline?
Yes, the app works completely offline, allowing you to measure ring sizes anytime and anywhere without needing an internet connection.
What are the subscription options for Ring Sizer & Finger Measure?
Subscription plans include Weekly ($4.99/P7D), Premium Monthly ($19.99/P1M), and Premium Yearly ($24.99/P1Y). The Premium Yearly plan offers a 3-day free trial.
Does Ring Sizer & Finger Measure have ads?
Yes, this app contains advertisements.
How does Ring Sizer & Finger Measure compare to other ring sizing apps?
Its key differentiator is device-specific calibration for enhanced accuracy, along with a comprehensive set of international size conversions and the ability to save multiple ring sizes for different fingers and people.
