# K4Ops vs Ring Sizer

The clearest difference is in-app purchases: K4Ops at none against Ring Sizer's 6. Ring Sizer's advantage is update cadence (every 4 days vs every 14 months) and iOS requirement (13.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 6 in-app purchases, starting at $2.99 per 7 days. K4Ops asks for nothing beyond the download.

K4Ops ships an update every 14 months, Ring Sizer every 4 days. The most recent releases landed on September 9, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | K4Ops | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/k4ops/id1488958203/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 147 MB | 46 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [K4Connect](https://appshunter.io/developer/950319358) | [Fabrizio Beccaceci](https://appshunter.io/developer/1772065340) |

## 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-your-ring-size/id6736466968)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Pro | $2.99 | per 7 days |
| Ring Sizer Pro | $5.99 | per month |
| Ring Sizer Pro | $6.99 | per month |
| Ring Sizer Pro | $29.99 | per year |
| RingSizer Lifetime | $14.99 | one-time |
| RingSizer Lifetime | $39.99 | one-time |


## 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 in-app purchases available.

### Do K4Ops or Ring Sizer have ads?

Neither K4Ops nor Ring Sizer shows ads.

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

K4Ops ships an update every 14 months, and Ring Sizer every 4 days. Most recently, K4Ops was updated on September 9, 2026 and Ring Sizer on August 20, 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.*