# The Diamond Store Ring Sizer vs GuardianMap

The clearest difference is update cadence: GuardianMap at every 3 weeks against The Diamond Store Ring Sizer's every 8 months. On price, ads, in-app purchases and device support 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, GuardianMap every 3 weeks. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | The Diamond Store Ring Sizer | GuardianMap |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 23.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 65 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TheDiamondStore.co.uk](https://appshunter.io/developer/981926075) | [Coding Minds, Inc.](https://appshunter.io/developer/1480612283) |

## 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


### GuardianMap

[App page](https://appshunter.io/ios/app/guardianmap/id6740737229)

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 GuardianMap free?

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

### Do The Diamond Store Ring Sizer or GuardianMap have ads?

Neither The Diamond Store Ring Sizer nor GuardianMap shows ads.

### Which is updated more often, The Diamond Store Ring Sizer or GuardianMap?

The Diamond Store Ring Sizer ships an update every 8 months, and GuardianMap every 3 weeks. Most recently, The Diamond Store Ring Sizer was updated on September 23, 2026 and GuardianMap on October 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.*