# International Ring Sizer vs Ring Sizer Tool

The clearest difference is rating: Ring Sizer Tool at 4.7 against International Ring Sizer's 3.5. Ring Sizer Tool also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 20 months). International Ring Sizer's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Ring Sizer Tool sells 1 in-app purchase, starting at $19.99 per year. International Ring Sizer asks for nothing beyond the download.

Ring Sizer Tool holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Ring Sizer Tool has 604 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 44% of International Ring Sizer's written reviews are positive against 70% of Ring Sizer Tool's.

International Ring Sizer ships an update every 20 months, Ring Sizer Tool every 5 weeks. The most recent releases landed on September 28, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | International Ring Sizer | Ring Sizer Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/international-ring-sizer/id1378100751/reviews) | **[4.7 (604 ratings)](https://appshunter.io/ios/app/ring-sizer-tool/id6466219535/reviews)** |
| Number of ratings | 2 | **604** |
| Positive reviews | 44.4% of reviews | **70.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 20 months | **Every 5 weeks** |
| Monetization | **Ad-supported** | Subscription |
| Size | 6 MB | 68 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Red Detour, LLC](https://appshunter.io/developer/1378100750) | [Appcano LLC](https://appshunter.io/developer/1626754199) |

## What reviewers say

### International Ring Sizer

[App page](https://appshunter.io/ios/app/international-ring-sizer/id1378100751)

Measure your ring size accurately using an existing ring. This utility helps you find the perfect fit without needing a physical sizer. Ideal for online jewelry purchases.

**Highlights:** Measure ring size with existing rings, Accurate sizing for online purchases, Simple and intuitive interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Ring Sizer Tool

[App page](https://appshunter.io/ios/app/ring-sizer-tool/id6466219535)

Accurately measure your finger size or compare existing rings to find the perfect fit. This tool simplifies ring sizing for confident online purchases and jewelry selection.

**Highlights:** Finger measurement without a ring, Ring comparison for sizing, Intuitive and simple interface, Accurate sizing for online shopping, Suitable for buyers and jewelers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Annual | $19.99 | per year |

**What reviewers like**

- 👍 Easy to use
- ✅ Accurate sizing
- 💰 Free to use
- 📱 Works with newer iPhones
- 💡 Better than paper methods

**What reviewers complain about**

- ❌ Inaccurate finger sizing
- ❌ Wildly wrong estimates
- ❌ Doesn't work for some users

**Requested features**

- Dynamically update values as slider adjusts


## Frequently asked questions

### Is International Ring Sizer free?

International Ring Sizer is free to download, with no in-app purchases.

### Is Ring Sizer Tool free?

Ring Sizer Tool is free to download, with in-app purchases available.

### Which has better reviews, International Ring Sizer or Ring Sizer Tool?

Ring Sizer Tool is rated higher. International Ring Sizer averages 3.5 out of 5 from 2 ratings, while Ring Sizer Tool averages 4.7 from 604 ratings.

### Do International Ring Sizer or Ring Sizer Tool have ads?

International Ring Sizer shows ads; Ring Sizer Tool does not.

### Which is updated more often, International Ring Sizer or Ring Sizer Tool?

International Ring Sizer ships an update every 20 months, and Ring Sizer Tool every 5 weeks. Most recently, International Ring Sizer was updated on September 28, 2026 and Ring Sizer Tool on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*