# Ring Sizer vs TBK Machine

The clearest difference is in-app purchases: TBK Machine at none against Ring Sizer's 2. TBK Machine also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Ring Sizer sells 2 in-app purchases, starting at $3.99 per 7 days. TBK Machine asks for nothing beyond the download.

Ring Sizer ships an update every 2 months, TBK Machine weekly. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ring Sizer | TBK Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (14 ratings)](https://appshunter.io/ios/app/ring-sizer-ring-fing/id6444123111/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 23 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Irina Scelcunova](https://appshunter.io/developer/1737748446) | [嘉 王](https://appshunter.io/developer/1858748757) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ring-fing/id6444123111)

Accurately measure rings, jewelry, and other objects using advanced AR technology and a digital ruler. Supports multiple international sizing systems for precise fitting.

**Highlights:** Measure rings and jewelry with AR, Digital ruler for object measurement, Supports US, AU/GB, EU/ISO, JP/CN sizing, AR tape measure functionality, Precise diamond/gemstone ring sizing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer | $3.99 | per 7 days |
| Ring Fing Vip for three months | $9.99 | per 3 months |


### TBK Machine

[App page](https://appshunter.io/ios/app/tbk-machine/id6774526397)

**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 TBK Machine free?

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

### Do Ring Sizer or TBK Machine have ads?

Ring Sizer shows ads; TBK Machine does not.

### Which is updated more often, Ring Sizer or TBK Machine?

Ring Sizer ships an update every 2 months, and TBK Machine weekly. Most recently, Ring Sizer was updated on October 20, 2026 and TBK Machine on October 25, 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.*