# Ultrahuman Ring Sizer vs Ring Sizer AI

The clearest difference is review sentiment: Ring Sizer AI at 100% against Ultrahuman Ring Sizer's 18%. Ring Sizer AI also leads on rating (5.0 vs 2.0). Ultrahuman Ring Sizer's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer AI sells 2 in-app purchases, starting at $4.99 per 7 days. Ultrahuman Ring Sizer asks for nothing beyond the download.

Ring Sizer AI holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: Ultrahuman Ring Sizer has 24 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 18% of Ultrahuman Ring Sizer's written reviews are positive against 100% of Ring Sizer AI's.

Ultrahuman Ring Sizer ships an update monthly, Ring Sizer AI every 5 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Ultrahuman Ring Sizer | Ring Sizer AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (24 ratings)](https://appshunter.io/ios/app/ultrahuman-ring-sizer/id6452756334/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ring-sizer-ai-size-finder/id6758885711/reviews)** |
| Number of ratings | **24** | 3 |
| Positive reviews | 17.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 45 MB | 42 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ULTRAHUMAN HEALTHCARE PRIVATE LIMITED](https://appshunter.io/developer/1491286708) | [Tianjin Illuso Information Technology Co., Ltd.](https://appshunter.io/developer/1864792206) |

## What reviewers say

### Ultrahuman Ring Sizer

[App page](https://appshunter.io/ios/app/ultrahuman-ring-sizer/id6452756334)

Instantly determine your ring size by taking a photo of your hand. The app uses advanced AI vision algorithms to accurately calculate your perfect fit, requiring only a standard-sized card in the frame for reference.

**Highlights:** Instant ring size calculation, AI-powered vision algorithm, Photo-based measurement, Requires standard card for reference, Accurate fit determination

**In-app purchases:** none


### 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 Ultrahuman Ring Sizer free?

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

### Is Ring Sizer AI free?

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

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

Ring Sizer AI is rated higher. Ultrahuman Ring Sizer averages 2.0 out of 5 from 24 ratings, while Ring Sizer AI averages 5.0 from 3 ratings.

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

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

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

Ultrahuman Ring Sizer ships an update monthly, and Ring Sizer AI every 5 weeks. Most recently, Ultrahuman Ring Sizer was updated on November 3, 2026 and Ring Sizer AI on November 5, 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.*