# U vs Ring Sizer

The clearest difference is rating: Ring Sizer at 4.3 against U's 1.0. Ring Sizer also leads on ratings volume (7 vs 1). U's advantage is in-app purchases (none vs 5) and iOS requirement (8.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 5 in-app purchases, starting at $5.99 per 7 days. U asks for nothing beyond the download.

Ring Sizer holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Ring Sizer has 7 ratings behind it against 1, so its average is the more settled of the two.

U ships an update every 2 weeks, Ring Sizer fortnightly. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | U | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/u-park/id1422716802/reviews) | **[4.3 (7 ratings)](https://appshunter.io/ios/app/ring-sizer-size-your-finger/id6816963164/reviews)** |
| Number of ratings | 1 | **7** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 52 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Qingdao Huazheng Software Information Technology](https://appshunter.io/developer/1018625975) | [Desidari Holding Ltd.](https://appshunter.io/developer/1576843270) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-park/id1422716802)

This app serves as a smart park service cloud platform, showcasing commercial properties and offering online services for businesses. It facilitates convenient site selection and office space, catering to daily operational and living needs within the park.

**Highlights:** Commercial property showcase, Online business services, Smart park service platform, Convenient site selection, Office space solutions, Daily operational support

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-size-your-finger/id6816963164)

Measure your finger or an existing ring accurately on your iPhone. Get your ring size in multiple international systems, including diameter and circumference. No printing or extra tools needed.

**Highlights:** Measure existing rings on screen, Measure finger without a ring, US, UK, EU, and JP sizing, View diameter and circumference, No printing or extra tools required, Quick and simple measurement

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Pro - Weekly | $5.99 | per 7 days |
| Ring Sizer Weekly | $7.99 | per 7 days |
| Ring Sizer Monthly | $19.99 | per month |
| Ring Sizer Annual | $24.99 | per year |
| Ring Sizer Yearly | $49.99 | per year |


## Frequently asked questions

### Is U free?

U is free to download, with no in-app purchases.

### Is Ring Sizer free?

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

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

Ring Sizer is rated higher. U averages 1.0 out of 5 from 1 ratings, while Ring Sizer averages 4.3 from 7 ratings.

### Do U or Ring Sizer have ads?

Neither U nor Ring Sizer shows ads.

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

U ships an update every 2 weeks, and Ring Sizer fortnightly. Most recently, U was updated on November 2, 2026 and Ring Sizer on November 10, 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.*