# Olypsys Measure vs Ring Sizer

The clearest difference is rating: Ring Sizer at 4.6 against Olypsys Measure's 3.2. Ring Sizer also leads on review sentiment (98% vs 67%) and ratings volume (177 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Olypsys Measure sells 3 in-app purchases, starting at $10.00 per month and Ring Sizer sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Ring Sizer holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: Ring Sizer has 177 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 67% of Olypsys Measure's written reviews are positive against 98% of Ring Sizer's.

Olypsys Measure ships an update every 4 weeks, Ring Sizer monthly. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Olypsys Measure | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/olypsys-measure/id1583943944/reviews) | **[4.6 (177 ratings)](https://appshunter.io/ios/app/ring-sizer-ring-size-measure/id6479995221/reviews)** |
| Number of ratings | 6 | **177** |
| Positive reviews | 66.7% of reviews | **98.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Freemium | Free with in-app purchases |
| Size | 101 MB | 44 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Olypsys Technologies Ltd](https://appshunter.io/developer/1583943946) | [Vipul Prajapati](https://appshunter.io/developer/1737800971) |

## What reviewers say

### Olypsys Measure

[App page](https://appshunter.io/ios/app/olypsys-measure/id1583943944)

This app helps businesses accurately measure and identify O-rings using their phone. It matches measurements against international standards and maintains an audit record with project details. Ideal for quality control during goods-inward inspection, part replacement, and pre-assembly checks.

**Highlights:** Accurate O-ring measurement, O-ring identification, Match against international standards, Audit record keeping, Project reference and location tagging, Goods-inward inspection tool

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Olypsys Pro Monthly | $10.00 | per month |
| Pro (yearly) | $80.00 | per year |
| Olypsys Enterprise Yearly | $600.00 | per year |


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ring-size-measure/id6479995221)

This app helps you accurately measure your ring size at home. It offers precise measurements in various units and international standards, eliminating guesswork for perfect-fitting jewelry. Ideal for online shoppers, gift-givers, and jewelers.

**Highlights:** Accurate ring size measurements, Metric and imperial units, International sizing standards (USA, UK, EU, etc.), Diameter or circumference measurement, Visual guides for accuracy, Save and share measurements

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer, Ring Size Measure | $2.99 | per 7 days |
| Ring Size Measure, Ring Sizer | $6.99 | per month |
| Ring Sizer Measure Premium | $19.99 | per year |


## Frequently asked questions

### Is Olypsys Measure free?

Olypsys Measure is free to download, with in-app purchases available.

### Is Ring Sizer free?

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

### Which has better reviews, Olypsys Measure or Ring Sizer?

Ring Sizer is rated higher. Olypsys Measure averages 3.2 out of 5 from 6 ratings, while Ring Sizer averages 4.6 from 177 ratings.

### Do Olypsys Measure or Ring Sizer have ads?

Neither Olypsys Measure nor Ring Sizer shows ads.

### Which is updated more often, Olypsys Measure or Ring Sizer?

Olypsys Measure ships an update every 4 weeks, and Ring Sizer monthly. Most recently, Olypsys Measure was updated on October 4, 2026 and Ring Sizer on October 18, 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.*