# Onyx CSS vs GRC Customers

The clearest difference is iOS requirement: Onyx CSS at 13.0 against GRC Customers's 15.0. On price, update cadence, ads 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.

Onyx CSS ships an update every 6 months, GRC Customers every 4 months. The most recent releases landed on June 5, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Onyx CSS | GRC Customers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Size | 24 MB | 23 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ULTIMATETEK SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1190319655) | [AXNOSIS LTD](https://appshunter.io/developer/1593358420) |

## What reviewers say

### Onyx CSS

[App page](https://appshunter.io/ios/app/onyx-css/id1561190933)

**Features:** macOS Compatibility

**In-app purchases:** none


### GRC Customers

[App page](https://appshunter.io/ios/app/grc-customers/id6444060346)

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

**In-app purchases:** none


## Frequently asked questions

### Is Onyx CSS free?

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

### Is GRC Customers free?

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

### Do Onyx CSS or GRC Customers have ads?

Neither Onyx CSS nor GRC Customers shows ads.

### Which is updated more often, Onyx CSS or GRC Customers?

Onyx CSS ships an update every 6 months, and GRC Customers every 4 months. Most recently, Onyx CSS was updated on June 5, 2026 and GRC Customers on September 18, 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.*