# Ring Sizer vs Ultrahuman Ring Sizer

The clearest difference is rating: Ring Sizer at 4.4 against Ultrahuman Ring Sizer's 2.0. Ring Sizer also leads on review sentiment (33% vs 18%) and ratings volume (73 vs 24). Ultrahuman Ring Sizer's advantage is in-app purchases (none vs 6) 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 sells 6 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, 4.4 against 2.0. Both are backed by a comparable volume of ratings — 73 and 24 respectively. Written reviews point the same way: 33% of Ring Sizer's written reviews are positive against 18% of Ultrahuman Ring Sizer's.

Ring Sizer ships an update every 2 months, Ultrahuman Ring Sizer monthly. The most recent releases landed on September 12, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Ring Sizer | Ultrahuman Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (73 ratings)](https://appshunter.io/ios/app/ring-sizer-size-measure-app/id1644578569/reviews)** | [2.0 (24 ratings)](https://appshunter.io/ios/app/ultrahuman-ring-sizer/id6452756334/reviews) |
| Number of ratings | **73** | 24 |
| Positive reviews | **33.3% of reviews** | 17.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 45 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrei Nemtsou](https://appshunter.io/developer/1612416096) | [ULTRAHUMAN HEALTHCARE PRIVATE LIMITED](https://appshunter.io/developer/1491286708) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-size-measure-app/id1644578569)

Easily determine your ring size using your phone's screen. Simply place a ring on the designated area and adjust the slider to match its inner edges. The app then displays your ring size in various international formats.

**Highlights:** Measure ring size on screen, Adjustable slider for precise fit, Multiple international size formats (US, AU/GB, EU/ISO, JP/CN), In-app ruler for inches and mm

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Premium | $1.99 | per 7 days |
| Premium Weekly | $3.99 | per 7 days |
| Ring Sizer | $4.99 | per month |
| Annual One-Time | $7.99 | per year |
| Ring Sizer | $9.99 | per year |
| Lifetime Premium | $19.99 | one-time |


### 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 4.4 out of 5 from 73 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 2 months, and Ultrahuman Ring Sizer monthly. Most recently, Ring Sizer was updated on September 12, 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.*