# osaring sizer vs Ring Sizer

The clearest difference is in-app purchases: osaring sizer at none against Ring Sizer's 4. osaring sizer also leads on update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer sells 4 in-app purchases, starting at $7.99 per 7 days. osaring sizer asks for nothing beyond the download.

osaring sizer ships an update every 5 days, Ring Sizer every 3 weeks. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | osaring sizer | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ring-sizer-size-your-finger/id6816963164/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 52 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Huoyan Intelligence Co.,Ltd](https://appshunter.io/developer/1895154951) | [Desidari Holding Ltd.](https://appshunter.io/developer/1576843270) |

## What reviewers say

### osaring sizer

[App page](https://appshunter.io/ios/app/osaring-sizer/id6766071045)

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

**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 (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 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 osaring sizer free?

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

### Is Ring Sizer free?

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

### Do osaring sizer or Ring Sizer have ads?

Neither osaring sizer nor Ring Sizer shows ads.

### Which is updated more often, osaring sizer or Ring Sizer?

osaring sizer ships an update every 5 days, and Ring Sizer every 3 weeks. Most recently, osaring sizer was updated on October 28, 2026 and Ring Sizer on October 29, 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.*