# Diskio vs SystemZen

The clearest difference is price: SystemZen at Free against Diskio's $5.99. SystemZen also leads on device support (3 vs 1). Diskio's advantage is in-app purchases (none vs 2). On update cadence, ads and iOS requirement there is nothing between them.

SystemZen is free to download; Diskio costs $5.99 up front. SystemZen sells 2 in-app purchases, starting at $9.99 per month. Diskio asks for nothing beyond the download.

Diskio ships an update weekly, SystemZen every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Diskio | SystemZen |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[3.9 (17 ratings)](https://appshunter.io/ios/app/diskio-disk-and-ssd-speed-test/id6467768299/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Paid | — |
| Size | 9 MB | 52 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sergii Khliustin](https://appshunter.io/developer/1598605990) | [Fenul LLC](https://appshunter.io/developer/6776814911) |

## What reviewers say

### Diskio

[App page](https://appshunter.io/ios/app/diskio-disk-and-ssd-speed-test/id6467768299)

This utility app provides precise speed tests for all your storage devices, from internal iPhone storage to external USB drives. Customize test parameters for detailed insights and identify performance bottlenecks. It offers a simple three-step process to analyze your storage's true capabilities.

**Highlights:** Precise disk speed testing, Tests internal and external storage, Customizable test parameters, Simple three-step process, Universally compatible with iOS devices, Identifies performance bottlenecks

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

**In-app purchases:** none


### SystemZen

[App page](https://appshunter.io/ios/app/systemzen-cleaner-and-storage/id6794717513)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SystemZen Pro Monthly | $9.99 | per month |
| SystemZen Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is Diskio free?

Diskio costs $5.99, with no in-app purchases.

### Is SystemZen free?

SystemZen is free to download, with in-app purchases available.

### Do Diskio or SystemZen have ads?

Both Diskio and SystemZen show ads.

### Which is updated more often, Diskio or SystemZen?

Diskio ships an update weekly, and SystemZen every 4 days. Most recently, Diskio was updated on October 24, 2026 and SystemZen on October 25, 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.*