# ISN NFS vs Diskio

The clearest difference is price: ISN NFS at Free against Diskio's $5.99. ISN NFS also leads on ads (none vs shown) and device support (3 vs 1). Diskio's advantage is update cadence (weekly vs every 14 months). On in-app purchases and iOS requirement there is nothing between them.

ISN NFS is free to download; Diskio costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ISN NFS ships an update every 14 months, Diskio weekly. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ISN NFS | Diskio |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| 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 | No |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Weekly** |
| Monetization | — | Paid |
| Size | 6 MB | 9 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aleut Community of St. Paul Island Tribal Government](https://appshunter.io/developer/1329178887) | [Sergii Khliustin](https://appshunter.io/developer/1598605990) |

## What reviewers say

### ISN NFS

[App page](https://appshunter.io/ios/app/isn-nfs/id1363258043)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ISN NFS free?

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

### Is Diskio free?

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

### Do ISN NFS or Diskio have ads?

Diskio shows ads; ISN NFS does not.

### Which is updated more often, ISN NFS or Diskio?

ISN NFS ships an update every 14 months, and Diskio weekly. Most recently, ISN NFS was updated on October 12, 2026 and Diskio 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.*