For shopping online is perfect
Easy to use and right measurements.
Accurate measurement
Perfect for online ring shop
Free
In-App Purchases
About
Easily measure your ring size at home without a jeweler. Accurately determine your size by measuring your finger or an existing ring, with results instantly displayed in all major international standards.
✓Measure finger size on screen
✓Match existing ring size
✓Instant international size conversion
✓Save and organize multiple sizes
✓Share sizes with others
✓Built-in size converter
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What's New in Ring Sizer App
1.0.3
August 19, 2026
New guided onboarding: see how the app works and learn to measure your ring size accurately — no more guessing.
Subscription plans
Ring Sizer Pro Weekly
Unlock unlimited access to ring size measure
$4.997 Days
User reviews
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FAQ
How accurate is Ring Sizer?
Ring Sizer is designed for accuracy by using your device's actual screen dimensions for on-screen measurements. The slider-based interface aims to eliminate guesswork, providing results you can trust for purchases.
Does Ring Sizer have ads?
No, Ring Sizer is ad-free, allowing for an uninterrupted user experience.
What are the premium features in Ring Sizer?
Premium features include measuring your finger directly on the screen, matching existing rings with an on-screen circle, saving unlimited ring sizes with custom labels, and instantly sharing your sizes with others.
What subscription plans does Ring Sizer offer?
Ring Sizer offers Weekly ($4.99/P7D) and Yearly ($29.99/P1Y) auto-renewing subscriptions, with the Yearly plan including a 3-day free trial. A Lifetime option is also available as a one-time purchase.
Can I use Ring Sizer to convert between different ring size standards?
Yes, Ring Sizer includes a built-in converter that allows you to quickly switch between US, EU, UK, JP, and other international sizing standards, which is ideal for online shopping or travel.
What devices is Ring Sizer compatible with?
Ring Sizer is available for iPhone and iPod devices.
How often is Ring Sizer updated?
The latest version, 1.0.1, was released on August 11, 2026, indicating recent development and support for the application.
What is the age rating for Ring Sizer?
Ring Sizer has an age rating of 4+, making it suitable for a wide range of users.