Ring Sizer – Ring Size Meter

Ring Sizer – Ring Size Meter

Ring Sizing Measurement Tool

460 ratings
51 reviews
$0.99 Free
In-App PurchasesWith Ads

Price history


Details

  • Released
  • Updated
  • April 1, 2023
  • May 15, 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
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About

Easily measure jewelry ring sizes using your phone's screen. Simply place your ring on the screen and adjust the slider to match its inner edge. The app provides accurate sizing in multiple international measurement systems.

Measure ring size by diameter or circumference
Support for metric and imperial units
Multiple international sizing systems
Save measurement results
Integrated ruler for other measurements
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What users say

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What's New in Ring Sizer

2.0.7

May 15, 2026

We’ve cleaned things up and made the app a bit smoother, so you can enjoy a better experience every time you use it.

Subscription plans

Weekly Access

Full access to all features

$1.997 Days
How to cancel Ring Sizer subscription ⁉️

Events

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Measure ring size with 3D mode or finger scanning!

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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.

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.

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.

No printing

I used this app to sort through my grandmother's old jewelry box and could instantly tell which rings would fit me and my sisters. It's faster than digging out a physical sizer and more accurate than trying to print one out.

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

What does the Ring Sizer app do?

The Ring Sizer app is a tool designed to help you accurately measure the size of jewelry rings using your smartphone's screen. You place the ring on the screen and use a slider to match its inner edge, allowing the app to determine the size.

How do I measure my ring size with this app?

To measure your ring size, place the ring on the white circle displayed on your phone's screen. Adjust the slider until the circle's edge perfectly aligns with the inner edge of your ring. The app will then display the ring's size.

What measurement systems does the app support?

The app supports a variety of popular international measurement systems, including US/CA, AU/GB, EU/ISO, JP/CN, and RU. It also supports both metric and imperial units for your convenience.

Is this app free to use?

The app is free to download and use, but it does offer in-app purchases. This means some features or an ad-free experience may be available for purchase.

Can I use this app to measure things other than rings?

Yes, the app includes a ruler feature that allows you to measure other jewelry and various items, making it a versatile measurement tool beyond just ring sizing.