# Onyx IX CSS vs Sraco ESS

The clearest difference is update cadence: Onyx IX CSS at every 4 months against Sraco ESS's every 24 months. On price, ads, 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.

Onyx IX CSS ships an update every 4 months, Sraco ESS every 24 months. The most recent releases landed on September 18, 2026 and December 22, 2025 respectively.

## The numbers

| Metric | Onyx IX CSS | Sraco ESS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 24 months |
| Size | 27 MB | 24 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ultimate Solutions](https://appshunter.io/developer/1190319655) | [Excellent Protection](https://appshunter.io/developer/1591909841) |

## What reviewers say

### Onyx IX CSS

[App page](https://appshunter.io/ios/app/onyx-ix-css/id1584092874)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sraco ESS

[App page](https://appshunter.io/ios/app/sraco-ess/id6475390790)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Onyx IX CSS free?

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

### Is Sraco ESS free?

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

### Do Onyx IX CSS or Sraco ESS have ads?

Neither Onyx IX CSS nor Sraco ESS shows ads.

### Which is updated more often, Onyx IX CSS or Sraco ESS?

Onyx IX CSS ships an update every 4 months, and Sraco ESS every 24 months. Most recently, Onyx IX CSS was updated on September 18, 2026 and Sraco ESS on December 22, 2025.

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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.*