# Ring Sizer vs Ultrahuman Ring Sizer

The clearest difference is review sentiment: Ring Sizer at 78% against Ultrahuman Ring Sizer's 18%. Ring Sizer also leads on rating (4.8 vs 2.0) and ratings volume (456 vs 24). Ultrahuman Ring Sizer's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer sells 5 in-app purchases, starting at $1.99 per 7 days. Ultrahuman Ring Sizer asks for nothing beyond the download.

Ring Sizer holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Ring Sizer has 456 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 78% of Ring Sizer's written reviews are positive against 18% of Ultrahuman Ring Sizer's.

Ring Sizer ships an update every 3 months, Ultrahuman Ring Sizer monthly. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Ring Sizer | Ultrahuman Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (456 ratings)](https://appshunter.io/ios/app/ring-sizer-ring-size-meter/id1666860110/reviews)** | [2.0 (24 ratings)](https://appshunter.io/ios/app/ultrahuman-ring-sizer/id6452756334/reviews) |
| Number of ratings | **456** | 24 |
| Positive reviews | **77.8% of reviews** | 17.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 92 MB | 45 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) | [ULTRAHUMAN HEALTHCARE PRIVATE LIMITED](https://appshunter.io/developer/1491286708) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ring-size-meter/id1666860110)

Easily measure jewelry ring sizes using your phone's screen. Simply place your ring on the screen and adjust the slider to match its inner edge. The app provides accurate sizing in multiple international measurement systems.

**Highlights:** Measure ring size by diameter or circumference, Support for metric and imperial units, Multiple international sizing systems, Save measurement results, Integrated ruler for other measurements

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Weekly Access | $2.99 | per 7 days |
| Weekly Access with Trial | $2.99 | per 7 days |
| Yearly Access | $3.99 | per year |
| Yearly Access | $9.99 | per year |

**What reviewers like**

- 🚀 Accurate measurements
- 👍 Intuitive interface
- 🌍 Supports multiple measurement systems
- 💾 Convenient storage of measurements
- 🌍 Worldwide compatibility

**What reviewers complain about**

- 🐛 Inaccurate measurements
- 💰 Deceptive trial/pricing
- 🔢 Limited size range

**Reported bugs**

- Incorrect size conversions
- Inconsistent performance

**Requested features**

- Dark mode option
- Additional measurement methods


### 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


## Frequently asked questions

### Is Ring Sizer free?

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

### Is Ultrahuman Ring Sizer free?

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

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

Ring Sizer is rated higher. Ring Sizer averages 4.8 out of 5 from 456 ratings, while Ultrahuman Ring Sizer averages 2.0 from 24 ratings.

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

Ring Sizer shows ads; Ultrahuman Ring Sizer does not.

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

Ring Sizer ships an update every 3 months, and Ultrahuman Ring Sizer monthly. Most recently, Ring Sizer was updated on September 22, 2026 and Ultrahuman Ring Sizer on September 19, 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.*