Ring Sizer – Ring Size Meter

Ring Sizer – Ring Size Meter

Ring Sizing Measurement Tool

463 ratings
54 reviews
Free
In-App PurchasesWith Ads

Price history


Details

Released
April 1, 2023
Updated
November 6, 2026

Features

Ring Sizer – Ring Size Meter screenshot #1 for iPhone
Ring Sizer – Ring Size Meter screenshot #2 for iPhone
Ring Sizer – Ring Size Meter screenshot #3 for iPhone
Ring Sizer – Ring Size Meter screenshot #4 for iPhone
iphone
ipad
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About

Measure jewelry ring sizes accurately using your phone's screen. Simply place a ring on the on-screen circle and adjust the slider to match its inner edge. Get results in various measurement systems and save your findings.

✓Measure ring size by diameter or circumference
✓Supports metric and imperial units
✓Multiple international sizing systems
✓Save measurement results
✓Built-in ruler for jewelry measurement
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What users say about Ring Sizer

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What's New in Ring Sizer

2.0.8

November 6, 2026

This update includes important bug fixes and performance improvements to ensure the app runs reliably and efficiently. We’re continuously working to enhance your experience and appreciate your feedback as we move forward.

More
3

Subscriptions & In-App Purchases

Weekly Access

Full access to all features

$1.997 Days
How to cancel Ring Sizer subscription ⁉️

Events

Read more about Perfect Ring for Love

Perfect Ring for Love

Find the right Ring Size for your Valentine

Jan 17, 2026 — Feb 15, 2026

Read more about New 3D & Finger Ring Sizer

New 3D & Finger Ring Sizer

Measure ring size with 3D mode or finger scanning!

Mar 16, 2025 — Apr 16, 2025

Read more about The Ring Size Finder App

The Ring Size Finder App

Now You Can Easily Manage Your Ring Size Data

Apr 2, 2024 — May 3, 2024

User reviews

😡😡

Me cobra casi diario, la elimine el
Mismo día que la descargue y aún así me cobra, no 1 vez al mes, diario me estan cobrando, ladrones

Great app

I wanted to surprise my girlfriend with an engagement ring and had no idea how to get her size secretly. I used this app to measure one of her rings, and the one I bought fit perfectly.

Response from developer

Thank you for your review. We're really glad the app helped you measure the ring size accurately and even more so that the surprise worked out. If you ever have suggestions to make the app even more helpful, feel free to let us know

Spot on

When I first began using this app, I double-checked the measurements at a jeweler, and they were spot on. It's a simple, brilliant tool that does exactly what it promises with clear instructions.

Response from developer

Thank you for your review. We're glad to hear the measurements matched the jeweler’s and that the app felt clear and reliable to use. If you ever have ideas for improvements or additional features, we’d be happy to hear them.

It’s good

I wanted to surprise my girlfriend with an engagement ring and had no idea how to get her size secretly. I used this app to measure one of her rings, and the one I bought fit perfectly.

Response from developer

Thank you for sharing your experience. We're happy to hear the app helped you find the right size and that your surprise worked out perfectly. If you have any suggestions to make the app even better, feel free to let us know.

Multiple systems

As someone who buys vintage rings from online markets all over the world, the different measurement systems that come with the app are extremely helpful. Say goodbye to those confusing charts or even guessing.

Response from developer

Thank you for your review. We're glad the multiple sizing systems are making things easier for you, especially when buying vintage rings from different regions. If you ever have ideas for additional features or improvements, we’d love to hear them.

Developer apps

User experience

🐞

Reported Bugs

2 issues

Incorrect size conversions

Bug

Inconsistent performance

Bug
✨

Requested Features

2 requests

Dark mode option

Feature

Additional measurement methods

Feature

FAQ

How do I measure my ring size with Ring Sizer?

Place your ring on the white circle on your phone's screen. Adjust the slider to match the inner edge of your ring with the circle's edge. The app will then display your ring size in various measurement systems.

What measurement systems does Ring Sizer support?

Ring Sizer supports multiple popular measurement systems including US/CA, AU/GB, EU/ISO, JP/CN, and RU. It also supports both metric and imperial units for your convenience.

Can I save my ring size measurements with Ring Sizer?

Yes, Ring Sizer allows you to save your measurement results. This is helpful for keeping track of different ring sizes or for future reference when shopping.

Does Ring Sizer have ads?

Yes, Ring Sizer contains advertisements. Users have reported that the app includes advertisements.

What is the pricing for Ring Sizer subscriptions?

Ring Sizer offers weekly and yearly subscription plans. Weekly access is priced at $1.99 or $2.99, with an option for a 3-day free trial on the $2.99 plan. Yearly access is available for $3.99 or $9.99.

Is Ring Sizer accurate for measuring ring sizes?

User reviews indicate that Ring Sizer generally provides accurate measurements, with pros highlighting 'Accurate measurements' and 'Precise ring identification'. However, some user reviews mention 'Inaccurate measurements' as a con.

What devices is Ring Sizer available on?

Ring Sizer is available for iPhone and iPad devices. It is designed for use on iOS platforms.

How often is Ring Sizer updated?

The latest version of Ring Sizer is 2.0.8, last updated on November 6, 2026. This indicates a recent update, suggesting ongoing development and support.