# Ring Sizer vs Ultrahuman Ring Sizer

The clearest difference is rating: Ring Sizer at 4.2 against Ultrahuman Ring Sizer's 2.0. Ring Sizer also leads on ratings volume (2.4K vs 24) and review sentiment (31% vs 18%). Ultrahuman Ring Sizer's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer sells 5 in-app purchases, starting at $2.99 per 7 days. Ultrahuman Ring Sizer asks for nothing beyond the download.

Ring Sizer holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Ring Sizer has 2.4K ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 31% of Ring Sizer's written reviews are positive against 18% of Ultrahuman Ring Sizer's.

Ring Sizer ships an update every 3 weeks, Ultrahuman Ring Sizer monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Ring Sizer | Ultrahuman Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (2.4K ratings)](https://appshunter.io/ios/app/ring-sizer-size-measure-app/id6448044027/reviews)** | [2.0 (24 ratings)](https://appshunter.io/ios/app/ultrahuman-ring-sizer/id6452756334/reviews) |
| Number of ratings | **2.4K** | 24 |
| Positive reviews | **30.9% of reviews** | 17.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 225 MB | 45 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LightApps OU](https://appshunter.io/developer/1683318905) | [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/id6448044027)

This application helps you accurately measure ring and finger sizes without the need for physical tools. It offers a user-friendly interface and supports various measurement systems for precise results, making online jewelry shopping easier.

**Highlights:** Precise finger and ring sizing, User-friendly interface, Supports multiple measurement systems, Compatible with Apple Watch, Accurate online jewelry sizing

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Pro | $2.99 | per 7 days |
| Ring Sizer Pro | $4.99 | per 7 days |
| Ring Sizer Pro | $4.99 | per 7 days |
| Ring Size Pro | $6.99 | per month |
| Ring Sizer Pro | $29.99 | per year |

**What reviewers like**

- ⭐️ Accurate measurements
- 👍 Easy to use
- 🚀 Convenient ring sizer
- 🔍 Helpful for online purchases

**What reviewers complain about**

- 🔒 Difficult to cancel subscription
- 💰 Paid subscription required
- 🐛 Inconsistent sizing results
- 🤯 Confusing/misleading free trial
- 🚫 Doesn't work as advertised

**Reported bugs**

- Blank screen when trying to measure
- Incorrect ring size measurements

**Requested features**

- Easier subscription cancellation
- Free, one-time usage option


### 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 4.2 out of 5 from 2.4K 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 weeks, and Ultrahuman Ring Sizer monthly. Most recently, Ring Sizer was updated on November 3, 2026 and Ultrahuman Ring Sizer on November 3, 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.*