# K4Ops vs Ring sizer

The clearest difference is ads: K4Ops at none against Ring sizer's shown. K4Ops also leads on monetization model (free vs ad-supported). Ring sizer's advantage is ratings volume (13 vs 4) and iOS requirement (13.0 vs 15.0). On price, rating, update cadence and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.8 for K4Ops against 3.7 for Ring sizer. Both are backed by a comparable volume of ratings — 4 and 13 respectively.

K4Ops ships an update every 14 months, Ring sizer every 8 months. The most recent releases landed on September 26, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | K4Ops | Ring sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/k4ops/id1488958203/reviews)** | [3.7 (13 ratings)](https://appshunter.io/ios/app/ring-sizer-unit-convertor/id1566103820/reviews) |
| Number of ratings | 4 | **13** |
| Positive reviews | — | 64.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 8 months** |
| Monetization | **Free** | Ad-supported |
| Size | 147 MB | 48 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [K4Connect](https://appshunter.io/developer/950319358) | [Regent Branding Ltd](https://appshunter.io/developer/1128207635) |

## What reviewers say

### K4Ops

[App page](https://appshunter.io/ios/app/k4ops/id1488958203)

This utility app allows users to configure products from a specific provider. It requires contact with support for access to its configuration features.

**Highlights:** Product configuration, K4Connect product management, Utility tool

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is K4Ops free?

K4Ops is free to download, with no in-app purchases.

### Is Ring sizer free?

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

### Which has better reviews, K4Ops or Ring sizer?

K4Ops is rated higher. K4Ops averages 3.8 out of 5 from 4 ratings, while Ring sizer averages 3.7 from 13 ratings.

### Do K4Ops or Ring sizer have ads?

Ring sizer shows ads; K4Ops does not.

### Which is updated more often, K4Ops or Ring sizer?

K4Ops ships an update every 14 months, and Ring sizer every 8 months. Most recently, K4Ops was updated on September 26, 2026 and Ring sizer on October 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.*