# Dornheim 3D Scanner vs Ring Sizer+

The clearest difference is ads: Dornheim 3D Scanner at none against Ring Sizer+'s shown. Dornheim 3D Scanner also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Dornheim 3D Scanner sells 7 in-app purchases, starting at $9.99 per month and Ring Sizer+ sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Dornheim 3D Scanner ships an update every 17 months, Ring Sizer+ every 23 months. The most recent releases landed on September 17, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Dornheim 3D Scanner | Ring Sizer+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (12 ratings)](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641/reviews)** |
| Number of ratings | — | **12** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 17 months** | Every 23 months |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 6 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dornheim Medical Images GmbH](https://appshunter.io/developer/1450370278) | [Arda Sen](https://appshunter.io/developer/1670665250) |

## What reviewers say

### Dornheim 3D Scanner

[App page](https://appshunter.io/ios/app/dornheim-3d-scanner/id1505306338)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.99 | per month |
| Export function - Monthly | $4.99 | one-time |
| Measurement - Monthly | $9.99 | one-time |
| Export function - Yearly | $39.99 | one-time |
| Measurement - Yearly | $79.99 | one-time |
| Export function - Perpetual | $99.99 | one-time |
| Measurement - Perpetual | $199.99 | one-time |


### Ring Sizer+

[App page](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641)

Effortlessly measure rings, jewelry, and other objects with precision using visual cues and a digital ruler. Supports global sizing standards and stores measurement history for convenience. Ensures a perfect fit for your precious items.

**Highlights:** Seamless measurement experience, Versatile digital ruler, Global size support, Perfect fit guarantee, Measurement history

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Dornheim 3D Scanner free?

Dornheim 3D Scanner is free to download, with in-app purchases available.

### Is Ring Sizer+ free?

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

### Do Dornheim 3D Scanner or Ring Sizer+ have ads?

Ring Sizer+ shows ads; Dornheim 3D Scanner does not.

### Which is updated more often, Dornheim 3D Scanner or Ring Sizer+?

Dornheim 3D Scanner ships an update every 17 months, and Ring Sizer+ every 23 months. Most recently, Dornheim 3D Scanner was updated on September 17, 2026 and Ring Sizer+ on September 3, 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.*