# The Diamond Store Ring Sizer vs Herff Jones RightSize™

The clearest difference is monetization model: The Diamond Store Ring Sizer at free against Herff Jones RightSize™'s ad-supported. The Diamond Store Ring Sizer also leads on iOS requirement (13.0 vs 16.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

The Diamond Store Ring Sizer ships an update every 8 months, Herff Jones RightSize™ every 4 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | The Diamond Store Ring Sizer | Herff Jones RightSize™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.8 (108 ratings)](https://appshunter.io/ios/app/herff-jones-rightsize/id1461730450/reviews)** |
| Number of ratings | — | **108** |
| Positive reviews | 23.5% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 7 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TheDiamondStore.co.uk](https://appshunter.io/developer/981926075) | [Radius Technologies](https://appshunter.io/developer/1452970152) |

## What reviewers say

### The Diamond Store Ring Sizer

[App page](https://appshunter.io/ios/app/the-diamond-store-ring-sizer/id972698219)

Easily determine ring sizes in UK, EU, or USA measurements using your phone. Simply place an existing ring on your screen and adjust a circle to match its inner diameter, perfect for keeping gifts a surprise.

**Highlights:** Accurate ring size measurement, Supports UK, EU, and USA sizing, Covers all sizes F-Z, Easy to use interface, Keeps gift purchases a surprise

**Features:** macOS Compatibility

**In-app purchases:** none


### Herff Jones RightSize™

[App page](https://appshunter.io/ios/app/herff-jones-rightsize/id1461730450)

Easily determine your correct ring size for ordering class rings. This app works on any mobile device and for any finger, ensuring you can confidently select your style without worrying about size accuracy.

**Highlights:** Find correct ring size, Works on any mobile device, Works for any finger, Quick and easy to use

**In-app purchases:** none

**What reviewers like**

- 👍 Works perfectly when instructions followed
- 👍 Spot on sizing
- 👍 Great idea/tech
- 👍 Game changer
- 👍 Intuitive and useful

**What reviewers complain about**

- 🐛 Rarely gives a size
- 🐛 Size box stays blank
- 🐛 App is broken
- 🐛 Does not work
- 🐛 Confusing results

**Reported bugs**

- App is broken and does not work.
- Does not recognize device PPI.
- Will not load, showing 'something went wrong'.
- App doesn't work at all for iPhone 16.
- App doesn't recognize device ppi.


## Frequently asked questions

### Is The Diamond Store Ring Sizer free?

The Diamond Store Ring Sizer is free to download, with no in-app purchases.

### Is Herff Jones RightSize™ free?

Herff Jones RightSize™ is free to download, with no in-app purchases.

### Do The Diamond Store Ring Sizer or Herff Jones RightSize™ have ads?

Neither The Diamond Store Ring Sizer nor Herff Jones RightSize™ shows ads.

### Which is updated more often, The Diamond Store Ring Sizer or Herff Jones RightSize™?

The Diamond Store Ring Sizer ships an update every 8 months, and Herff Jones RightSize™ every 4 months. Most recently, The Diamond Store Ring Sizer was updated on November 1, 2026 and Herff Jones RightSize™ on November 11, 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.*