# Ring sizer vs ITBS CPA

The clearest difference is ads: ITBS CPA at none against Ring sizer's shown. ITBS CPA also leads on update cadence (every 3 weeks vs every 8 months). Ring sizer's advantage is iOS requirement (13.0 vs 15.6). On price, 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.

Ring sizer ships an update every 8 months, ITBS CPA every 3 weeks. The most recent releases landed on October 11, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Ring sizer | ITBS CPA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (13 ratings)](https://appshunter.io/ios/app/ring-sizer-unit-convertor/id1566103820/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 64.1% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 48 MB | 27 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Regent Branding Ltd](https://appshunter.io/developer/1128207635) | [ITBS Information Technology Business Solutions Corp.](https://appshunter.io/developer/1792363280) |

## What reviewers say

### Ring sizer

[App page](https://appshunter.io/ios/app/ring-sizer-unit-convertor/id1566103820)

Easily determine your accurate ring size and convert between international sizing standards. This tool helps you find the perfect fit for any ring, avoiding the frustration of ill-fitting jewelry. Save your sizes and compare them effortlessly.

**Highlights:** Accurate ring and finger size measurement, Convert between international ring size standards (US, UK, EU), Simple and easy-to-use interface, Supports a wide range of ring sizes, Save and compare ring sizes, Unit conversion functionality

**Features:** Vision Pro support

**In-app purchases:** none


### ITBS CPA

[App page](https://appshunter.io/ios/app/itbs-cpa/id6753594233)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ring sizer free?

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

### Is ITBS CPA free?

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

### Do Ring sizer or ITBS CPA have ads?

Ring sizer shows ads; ITBS CPA does not.

### Which is updated more often, Ring sizer or ITBS CPA?

Ring sizer ships an update every 8 months, and ITBS CPA every 3 weeks. Most recently, Ring sizer was updated on October 11, 2026 and ITBS CPA on September 17, 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.*