# Ring Sizer vs Odyssey Nova

The clearest difference is in-app purchases: Odyssey Nova at none against Ring Sizer's 3. Odyssey Nova also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 3 in-app purchases, starting at $3.99 per 7 days. Odyssey Nova asks for nothing beyond the download.

Ring Sizer ships an update every 3 weeks, Odyssey Nova monthly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Ring Sizer | Odyssey Nova |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (35 ratings)](https://appshunter.io/ios/app/ring-sizer-ring-measure/id6739887211/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 68 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ramkumar Vellaisamy](https://appshunter.io/developer/1706335914) | [Global Fund Solutions, LLC](https://appshunter.io/developer/1787861553) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ring-measure/id6739887211)

Instantly determine your precise ring size for online shopping, custom orders, or gift purchases. Offers multiple international sizing standards and saves your measurements for future use. Get accurate results with clear, step-by-step instructions.

**Highlights:** Instant ring size measurement, Support for multiple international sizing standards, Save and access size history, Step-by-step measurement guidance, Measure for custom ring widths

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Weekly | $3.99 | per 7 days |
| Ring Sizer Yearly | $9.99 | per year |
| Ring Sizer Lifetime | $19.99 | one-time |


### Odyssey Nova

[App page](https://appshunter.io/ios/app/odyssey-nova/id6751645218)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ring Sizer free?

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

### Is Odyssey Nova free?

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

### Do Ring Sizer or Odyssey Nova have ads?

Neither Ring Sizer nor Odyssey Nova shows ads.

### Which is updated more often, Ring Sizer or Odyssey Nova?

Ring Sizer ships an update every 3 weeks, and Odyssey Nova monthly. Most recently, Ring Sizer was updated on October 8, 2026 and Odyssey Nova on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*