# Ring Sizer – Size Your Finger — Measure, Save & Convert Sizes

> iPhone app to measure finger and ring sizes in multiple international systems. (iPhone/iPad app by Desidari Holding Ltd..)

- Source: https://appshunter.io/ios/app/ring-sizer-size-your-finger/id6816963164 (this page in markdown: same URL + `.md`)
- Developer: [Desidari Holding Ltd.](https://appshunter.io/developer/1576843270)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 51 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Polish, Brazilian Portuguese, Russian, European Spanish and 3 more
- Released: 2026-10-07
- Data updated: 2026-10-14
- Monetization: free with in-app purchases

## What is Ring Sizer?

Find your ring size right on your iPhone. Measure an existing ring on screen or measure your finger without a ring, then get your diameter, circumference, and ring size in US, UK, EU, and JP sizing systems.

No printing, paper size charts, account, or extra tools required. Whether you're buying a ring, choosing a gift, or helping a customer find the right size, you can get the measurements you need in seconds.

IDEAL FOR

• Finding your ring size before buying jewelry online
• Measuring an existing ring that already fits
• Measuring your finger when you don't have a ring
• Choosing a ring size for a gift, engagement, or wedding
• Helping customers compare ring sizes across different sizing systems

KEY FEATURES

◆ MEASURE AN EXISTING RING
Place a ring on your iPhone screen and adjust the on-screen guide to match its inner edge. Get its diameter, circumference, and corresponding ring size.

◆ NO RING? MEASURE YOUR FINGER
Don't have a ring to measure? Use the finger measurement flow to find your size without an existing ring or a printed size chart.

◆ US, UK, EU & JP RING SIZES
See your result in US, UK, EU, and JP sizing systems, making it easier to shop from jewelers and stores that use different size standards.

◆ DIAMETER & CIRCUMFERENCE
Get more than a ring size. View the measured diameter and circumference to help compare sizes and check jewelry measurements.

◆ NO PRINTING OR EXTRA TOOLS
Measure with your iPhone without printing a ring sizer or using a ruler, measuring tape, or other equipment.

◆ QUICK & SIMPLE
Open the app, choose how you want to measure, and get your result in seconds. No account or lengthy setup required.

FREQUENTLY ASKED QUESTIONS

How can I find my ring size with my iPhone?
You can measure an existing ring directly on your iPhone screen or use the finger measurement flow if you don't have a ring.

Can I measure a ring I already own?
Yes. Place a ring that fits you on the screen and adjust the guide to its inner edge to determine its measurements and size.

How can I find my ring size without a ring?
Use the finger measurement flow. It lets you estimate your ring size without an existing ring or a printed ring sizer.

Which ring size systems are supported?
The app shows ring sizes in US, UK, EU, and JP systems, along with diameter and circumference.

Can I use it when buying a ring as a gift?
Yes. If you have access to a ring that fits the person, you can measure it on your iPhone and use the result when comparing ring sizes.

Is this useful for jewelers and jewelry sellers?
Yes. Jewelers and sellers can use it as a quick way to measure rings and compare sizes across US, UK, EU, and JP sizing systems.

SUBSCRIPTION INFORMATION

Payment will be charged to your iTunes Account at confirmation of purchase. Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period. The renewal cost depends on the selected subscription plan. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription.

Support Address: support@getringsize.app
Privacy Policy: https://getringsize.app/pp
Terms of Use: https://getringsize.app/tou

## Key features

- Measure existing rings on screen
- Measure finger without a ring
- US, UK, EU, and JP sizing
- View diameter and circumference
- No printing or extra tools required
- Quick and simple measurement

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ring Sizer Weekly | $7.99 | per 7 days |
| Ring Sizer Yearly | $49.99 | per year |
| Ring Sizer Annual | $24.99 | per year |
| Ring Sizer Monthly | $19.99 | per month |


## Is Ring Sizer safe?

Not enough ratings yet to assess Ring Sizer.

## Is Ring Sizer legit?

Ring Sizer – Size Your Finger appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Ring Sizer is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Ring Sizer

### How can I find my ring size with Ring Sizer on my iPhone?

You can measure an existing ring directly on your iPhone screen by placing it on the screen and adjusting the on-screen guide to match its inner edge. Alternatively, use the finger measurement flow if you don't have a ring available.

### Can I measure a ring I already own with Ring Sizer?

Yes. Place a ring that fits you on the screen and adjust the guide to its inner edge. Ring Sizer will then determine its diameter, circumference, and corresponding ring size.

### How can I find my ring size without a ring using Ring Sizer?

Use the finger measurement flow within Ring Sizer. This feature allows you to estimate your ring size without needing an existing ring or a printed ring sizer.

### Which ring size systems does Ring Sizer support?

Ring Sizer displays ring sizes in US, UK, EU, and JP systems. It also provides the measured diameter and circumference for further comparison and verification.

### Can I use Ring Sizer when buying a ring as a gift?

Yes. If you have access to a ring that fits the intended recipient, you can measure it on your iPhone using Ring Sizer and use the resulting measurements when comparing ring sizes.

### Is Ring Sizer useful for jewelers and jewelry sellers?

Yes. Jewelers and sellers can utilize Ring Sizer as a quick tool to measure rings and compare sizes across US, UK, EU, and JP sizing systems, improving customer service.

### What are the subscription options for Ring Sizer?

Ring Sizer offers weekly, monthly, and annual subscription plans. There are also yearly plans available at different price points, with some offering free trial periods.

### How does the auto-renewal work for Ring Sizer subscriptions?

Your subscription to Ring Sizer will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current subscription period. The renewal cost depends on your chosen plan.

## Version history (last 1 release)

### 1.0 — 2026-10-08

No release notes.

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All apps by Desidari Holding Ltd.: https://appshunter.io/developer/1576843270

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-14.*