# Ring Sizer: LoopSize — Measure & Diameter

> Measure & Diameter (iPhone/iPad app by Adriano Souza Costa.)

- Source: https://appshunter.io/ios/app/ring-sizer-loopsize/id6749704116 (this page in markdown: same URL + `.md`)
- Developer: [Adriano Souza Costa](https://appshunter.io/developer/1741603125)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 23 MB
- Languages: American English, French (France), Japanese, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2025-09-01
- Data updated: 2026-10-18

## What is Ring Sizer?

Find your ring size from diameter or circumference and compare international standards with LoopSize.

LoopSize is a ring size chart and converter for anyone who needs to find, check, or explain a ring measurement before buying. Use the visual guide to adjust a ring or finger diameter and view equivalents for BR, US, UK, EU/ISO, JP, CN, and IN.

Use LoopSize to:
• check a size before buying online;
• compare sizes across countries;
• choose an engagement, wedding, or gift ring;
• save ring and finger measurements;
• share a measurement summary as a PDF;
• support jewelry customer service.

How it works:
1. Choose Ring or Finger.
2. Adjust the diameter with the control or use the measurement you have.
3. View diameter, circumference, and international equivalents.
4. Save the result and share it as a PDF.

View measurements in millimeters or inches. Keep a history for future purchases, repeat customers, and follow-up fittings.

Pro features:
• branded PDFs;
• measurement history;
• iCloud sync for measurements and preferences across devices.

Results depend on the reference provided and screen calibration. Print the PDF at 100% scale when using a physical reference circle.

Privacy Policy:
https://adrianosouzacosta.com.br/apps/loopsize/privacy-policy

Terms of Use:
https://adrianosouzacosta.com.br/apps/loopsize/terms-of-use

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| LoopSize Pro — 6 Months | $9.90 | per 6 months |
| Annual | $24.99 | per year |
| Weekly | $0.99 | per 7 days |
| Monthly | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $24.99 | one-time |


## Is Ring Sizer safe?

Not enough ratings yet to assess Ring Sizer.

## Is Ring Sizer legit?

Ring Sizer: LoopSize appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Ring Sizer is 73 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.3.1 — 2026-10-12

Performance improvements and bug fixes

### 1.3.0 — 2026-10-10

Improvements and bug fixes

### 1.2.1 — 2026-09-01

• Improved ring measurement component

### 1.2.0 — 2026-06-05

• Performance improvements and bug fixes

### 1.1.0 — 2025-09-17

• Personalize the PDF with your brand;
• Sync measurements and preferences in iCloud;
• Accessibility improvements;
• Enhanced ring and finger size marker;

## Apps similar to Ring Sizer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ring Sizer: Sizerly](https://appshunter.io/ios/app/ring-sizer-sizerly/id6746245798) | 3.3 (3) | Free | Utilities |
| [Ring Sizer : Ring size measure](https://appshunter.io/ios/app/ring-sizer-ring-size-measure/id6756798107) | 5.0 (1) | Free | Utilities |
| [Ring Sizer App: Accurate](https://appshunter.io/ios/app/ring-sizer-app-accurate/id6747257280) | — | Free | Utilities |
| [Ring Sizer & Finger Measure](https://appshunter.io/ios/app/ring-sizer-and-finger-measure/id6752258147) | 1.0 (1) | Free | Utilities |
| [Ring-Sizer](https://appshunter.io/ios/app/ring-sizer/id6612031141) | — | Free | Utilities |
| [Ring Sizer: Risi](https://appshunter.io/ios/app/ring-sizer-risi/id6736565382) | 4.6 (36) | Free | Utilities |

## More apps by Adriano Souza Costa

- [KuboRush: Block Puzzle](https://appshunter.io/ios/app/kuborush-block-puzzle/id6757385646)
- [Dual Camera: DuoTake](https://appshunter.io/ios/app/dual-camera-duotake/id6761627384)

All apps by Adriano Souza Costa: https://appshunter.io/developer/1741603125

## Related topics

[zikr ring](https://appshunter.io/ios/topics/zikr-ring) · [medidor de anillos](https://appshunter.io/ios/topics/medidor-de-anillos)

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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 2026-10-18.*