# Ring Sizer Tool vs Ring Sizer AI

The clearest difference is monetization model: Ring Sizer AI at free with in-app purchases against Ring Sizer Tool's subscription. Ring Sizer AI also leads on review sentiment (100% vs 71%) and rating (5.0 vs 4.7). Ring Sizer Tool's advantage is ads (none vs shown) and ratings volume (604 vs 2). On price, update cadence, in-app purchases 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 and Ring Sizer AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Ring Sizer AI holds the better App Store score, 5.0 against 4.7. 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: 71% of Ring Sizer Tool's written reviews are positive against 100% of Ring Sizer AI's.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ring Sizer Tool | Ring Sizer AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (604 ratings)](https://appshunter.io/ios/app/ring-sizer-tool/id6466219535/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ring-sizer-ai-size-finder/id6758885711/reviews)** |
| Number of ratings | **604** | 2 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 68 MB | 42 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appcano LLC](https://appshunter.io/developer/1626754199) | [Tianjin Illuso Information Technology Co., Ltd.](https://appshunter.io/developer/1864792206) |

## What reviewers say

### 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


### Ring Sizer AI

[App page](https://appshunter.io/ios/app/ring-sizer-ai-size-finder/id6758885711)

Accurately measure your ring size using your phone's camera. Features AI-powered scanning, a professional ruler, and a comprehensive size converter. Save measurements and get personalized style recommendations.

**Highlights:** AI Smart Scan for finger size, PPI calibrated screen measurement, Professional liquid glass ruler, 50+ regional size standards converter, Digital jewelry box for saved sizes, AI stylist for ring recommendations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $4.99 | per 7 days |
| Pro (Annually) | $29.99 | per year |


## Frequently asked questions

### Is Ring Sizer Tool free?

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

### Is Ring Sizer AI free?

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

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

Ring Sizer AI is rated higher. Ring Sizer Tool averages 4.7 out of 5 from 604 ratings, while Ring Sizer AI averages 5.0 from 2 ratings.

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

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

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

Ring Sizer Tool ships an update every 5 weeks, and Ring Sizer AI every 5 weeks. Most recently, Ring Sizer Tool was updated on October 14, 2026 and Ring Sizer AI on October 2, 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.*